The Simpsons, Family Guy, and South Park are the three longest-running animated TV series in history. The Simpsons TV series is in a league of its own with 32 seasons, 709 episodes and it is still in production. 

Family guy has 369 episodes and South Park has 309 episodes respectively. 

Throughout history, there have been just 9 animated TV series with at least 200 episodes and only 6 are still in production. 

For the purposes of this research, we are going to focus on famous failed cartoons from the 1980s, 1990s, and 200s, because that’s when the great “renaissance” of animated series occurred and a boom of supply hit the market. For context, there were 49 animated TV shows produced in the1960s compared to 135 shows 1980s. Those numbers grew even higher in the 90s and 200s. 

If you are beginning to invest in NFTs, this article is an important part of your homework. There are MANY similarities to NFT projects found below — cash-grab attempts after a boom of interest, copycat projects, the competitiveness of IP, inability to transfer IP from one medium to another (successful movies, movie stars, successful toy lines, successful video game lines, massively successful creators can all be found on this list attached to failed animated TV series), poor strategic decisions from otherwise intelligent creators / producers, and environmental factors. 

Many of you are buying into projects because they promise video series, comic book series, merchandise integrations, celebrity endorsements and the like. Some projects will execute this well, but most won’t. If you pay attention, you’ll see eery similarities to the Animated TV + Toy boom of the 1980s and 90s line up pretty well with what’s happening in the NFT space at this moment. 

(1) Trollkins (1981)| 1 Season | 13 Episodes

Source: IMDB

Trollkins was produced by Hanna-Barbera and first aired on the same day as the Smurfs on September 12th, 1981. 

The show followed colorful troll characters who lived in “Trolltown” in various adventures, but unlike the Smurfs, which ran for 9 seasons, the show lasted for just 1 season. 

The creation of the characters was based on the Troll dolls toy line. 

(2) Monchhichis (1983–1984)| 1 Season | 13 Episodes

Source: IMDB

Monchhichi’s were originated from Japanese stuffed monkey toys that were first released in 1974 and were later licensed by Mattel in the US. 

Hanna-Barbera produced the American cartoon series adaptation of the toys, but the show only ran for 13 episodes and lasted just 1 season.  

Monchhichi toys are still a collectible item and a 2017 animated series attempted to revive the TV adaptation of the collectibles. 

(3) Challenge of The Gobots (1984–85) | 2 Seasons| 65 Episodes 

Source: WikiPedia

Hanna-Barbera produced GoBots based on the Tonka GoBot toy line, which directly competed with Transformers. 

The GoBots toyline preceded Hasbro’s Transformers (a commercial success) by a year, but the toy product did not resonate with fans due to poor marketing and a simpler cartoon.

The animated show was released on September 8th, 1984, and ended after just 2 seasons. 

There was a movie made and released in 1986, but it did just $1.3 million at the box office. 

(4) Snorks (1984–89) | 4 Seasons | 65 Episodes 

Source: Wikipedia

Snorks was first developed in 1981 as a comic book series and was later released as a TV show that first aired on September 15th, 1984 on NBC. 

The show’s producer, Freddy Monnickendam, created the series for Hanna-Barbera after a rise of look-a-like competitors to their already successful Smurfs television show, which ran for 9 seasons. The idea was that if a show was going to knock off the Smurfs, it might as well be the original creator. 

The Snorks were a group of underwater creatures that lived in harmony together in Snorkland. 

(5) M.A.S.K. (Mobile Armored Strike Kommand) (1985–86) | 2 Seasons | 75 Episodes 

IMDB.com 

The M.A.S.K. television series was produced by DIC Entertainment and released in 1985. The show was based on the M.A.S.K. action figure products produced by Kenner (original series of Star Wars, Jurassic Park, and Batman). 

The show ran for 2 seasons and was about a task force that fought against a criminal organization V.E.N.O.M. (Vicious Evil Network of Mayhem). 

The first season of the show released 65 episodes, while the second season released just 10. Despite being criticized as just an advertisement for Kenner’s (acquired by Hasbro) toyline, Paramount Pictures and Hasbro are trying to re-introduce the characters on the silver screen. 

(6) The Legend of Zelda (1989) | 1 Season | 13 Episodes

Source: Wikipedia

The Legend of Zelda TV series was based on the Nintendo Video Game series. It was produced by DIC Enterprises and distributed by Viacom Enterprises. 

The plot followed Link and Princess Zelda as they worked to protect their kingdom from an evil wizard. 

The show aired from September 8th to December 1st, 1989, and was criticized for having a “repetitive” and “boring” plot. The quality of the animation was also not well-received as colors were too bright and the character’s hair color would change from scene to scene. 

(7) Defenders of the Earth (1986–87) | 1 Season | 65 Episodes 

Source: collider.com 

Defenders of the Earth was an animated TV series from King Features Entertainment (Marvel helped develop it) that featured a team of heroes from various comic strips. It featured Flash Gordon, the Phantom, Mandrake the Magician, and his ally Lothar. 

The show was released in 1986 but lasted just 1 season and was criticized for never delivering the “promised potential” of the four characters due to poor writing. 

(8) Centurions: Power Xtreme (1986) | 1 Season | 65 Episodes

Source: Wikipedia.com

The Centurions TV show was designed in Japan and featured a futuristic storyline about cyborg mad scientist threatening to take over Earth in the 21st century. 

Famous Silver Age comic book artists Jack Kirby (Marvel Comics) and Gil Kane contributed to the art and concepts of the show. 

Despite DC comics producing a comic series based on the show, after just 1 season, it was canceled. 

(9) Dinosaucers — 1987 | 1 Season | 65 Episodes 

Source: Wikipedia

Dinosaucers was co-produced in the United States and Canada, syndicated by Coca-Cola telecommunications. The show ran for 65 episodes but was canceled after just one season due to lack of popularity and low viewership. 

There are rare collectible toys derived from the show that still sell on eBay for a few hundred dollars. 

(10) Silverhawks (1986) | 1 Season | 65 Episodes

Source: Wikipedia

SilverHawks was a TV series created by Rankin/Bass Productions about a galactic team of cyborgs brought together to stop a space gangster, Mon Star. 

The show launched right after ThunderCats which helped SilverHawks gain initial popularity but the show lasted just one season. Some fans criticized it as being a copycat of the ThunderCats TV series (which ran for 4 seasons with 150 episodes), and while the original show provided initial interest, it wasn’t lasting. 

In 1987, Marvel released the SilverHawks comic series, and a toyline was released in 1987 but both projects were short-lived.  

(11) Bravestarr (1987–1988) | 1 Season | 65 Episodes

Source: Wikipedia

Bravestarr was an animated series set in the 23rd century on a desert planet called New Texas. It was created by Filmation and would be the company’s last show produced before it shut down. 

A year before the show aired, Mattel produced action figures based on the characters of the show, but the sales volume of the product was low and didn’t come close to the expected $200 million profits. 

There was also a video game released in 1987 based on the series and BraveStarr: The Movie was released in 1988, but was considered to be a commercial failure. 

(12) RoboCop: The Animated Series (1988) | 1 Season | 12 Episodes 

Source: Wikipedia

The RoboCop TV series was released in 1988, one year after the live-action RoboCop movie was released in theatres. 

The RoboCop movie was considered to be a success, with a 90% Rotten Tomatoes score and box office earnings of $53.4 million dollars on a $13.7 million dollar budget. 

Despite the success and popularity of the character, the TV show lasted just 12 episodes and was criticized as destroying plot continuity from the original movie and being “indistinguishable from any number of other animated TV show plots of the era.” 

(13) Dino-Riders (1988) | Seasons 2| Episodes 14

Source: Wikipedia

Dino-Riders was about humans who ended up traveling to a prehistoric Earth and building dinosaur armies to defend themselves against attackers. 

The show aired in 1988 for just 1 season. The show was described as a “promotional effort” for the Tyco Dino Riders toy line and across 14 episodes it managed to include every toy Tyco made. 

Technically, the show did not have 2 full seasons, as only the pilot aired for the second season. 

The producers changed the setting of the show for the second season and moved away from dinosaurs toward ice-age creatures like a wooly mammoth and enormous sloth. 

Some fans think that if they stuck to dinosaurs it would have continued to be a success. 

(14) COPS — 1988–1989 | 1 Season | 65 Episodes

Source: Wikipedia

Set in 2020, COPS was an animated series about a police force defending a fictional city from gangsters. The show ran until 1989 and was re-released twice, in 1993 and 1995. 

The show was based on Hasbro’s Cops and Crookes action figure products and DC comics released a comic series based on the show. 

(15) Denver, the Last Dinosaur (1988) | 2 seasons | 50 Episodes 

Source: Wikipedia

Denver, the Last Dinosaur was about a dinosaur born in the modern world after a crew of teenagers released him from his egg. The antagonist of the show wanted to use the dinosaur to make money as a promotional character but the teens fought to protect their new friend.

The show was released during the dinosaur popularity boom that began in 1988 with The Land Before Time, but began to fade until 1993 when Jurassic Park was released. 

The show was rebooted in 2018 and was retitled as Denver and Cliff, but it also lasted 1 season. 

(16) Mister T (1983–86) | 3 Seasons | 30 Episodes 

Source: Wikipedia

Mr. T was one of the most popular stars of the 1980s, especially after he appeared in Rocky III. The show looked to capitalize on this fame by featuring his character as the coach of a gymnastics team that traversed the globe to solve mysteries. 

The show lasted just 3 seasons and viewers described it as similar to many other shows on television at the time — poor quality and unoriginal plotlines. 

(17) Popples (1986–87) | 2 Seasons | 44 Episodes 

Source: Wikipedia

Popples was yet another animated TV series based on a toy product and was produced by DIC Enterprises. Much like other projects on this list, a comic series was also created by Marvel / Star Comics based on the teddybear-like toys.

At this point, it’s obvious that toy releases were paired with television shows and comics as a well to build the intellectual property and advertise the products. 

Popples lasted just two seasons and its 2015 Netflix reboot lasted just one season. 

(18) InHumanoids (1986) | 1 Season | 13 Episodes

Source: Wikipedia

The InHumanoids animated TV series was released at the same time as Hasbro’s InHumanoids toyline. 

Sunbow Entertainment and Marvel Productions produced a show about a group of super-hero scientists who battled monsters called the InHumanoids. 

While the show did receive protests about its depicted violence, it was canceled after one season. The show cancellation happened before the failure of the toy line, which was described as an “utter bomb”. 

(19) The Super Mario Bros. Super Show! (1989) | 1 Season | 52 Episodes

Source: Wikipedia

This is the first show on the list that combines an animated series blended with live-action. Wrestler Lou Albano voice and live acted Mario and Danny Wells played Luigi. 

Despite being based around a wildly popular video game, Nintendo decided not to renew the series for a 2nd season. 

The show is remembered as being a hit with children, but it was thought to be canceled due to how labor-intensive it was to produce a new episode every single day because it blended live-action and required actors to be on set. 

(20) Garbage Pail Kids (1987) | 1 Season | 13 Episodes (Did not air) 

Source: Looper.com 

The Garbage Pail Kids TV series was based on the popular trading card game produced by the Topps (known for its production of sports cards). 

Some of the rarer cards from that trading card game are worth thousands of dollars today in mint condition. 

Despite production on the show for 13 episodes, it was canceled before it aired. 

CBS ultimately decided not to air the show after growing concerns from protesters based on the shows gruesome content. Advertisers began de-committing because of it.

The show did air in other countries, but a team member from Topps was happy it didn’t air because “it’s a lame, castrated version of the Garbage Pail Kids, carefully avoiding everything that made our cards work.”

(21) Jayce and the Wheeled Warriors (1985) | 1 Season | 65 Episodes 

Source: Wikipedia

Jayce and the Wheeled Warriors was aired on September 9th, 1985 and was developed in conjunction with Mattel’s Wheeled Warriors toyline release. 

The show had support from writer J Michael Straczynski (Babylon 5 and Crusade, Marvel Comics, DC Comics) to help legitimize the TV series, but it ultimately was a glorified commercial run to promote the toys. 

The toy line (and show) failed for a number of reasons, but one in particular was that the toy line did not have any characters from the TV show. It was impossible for children to recreate scenes from the show as the toy set only came with playsets and vehicles. 

(22) Jem and the Holograms (1985–1988) | 3 Seasons | 65 Episodes

Source: Wikipedia

The Jem TV series was brought to life by the same team who created the successful G.I. Joe and Transformers TV series. 

The musical series featured a record company owner who had a singer alter-ego and followed her adventures with her band. 

By all intents and purposes, the show was a success — it was the #1 Nielsen rated syndicated cartoon series for a period of time and had 2.5 million weekly viewers. 

However, the Jem toy sales faltered with the rise in competition from Hasbro’s Barbie products, and in 1988, the popular TV series was discontinued. 

In 2015, a movie based on the series was released in theatres, but was considered a major failure with low box office sales. 

(23) Gilligan’s Planet (1982)| 1 Season | 13 Episodes 

Source: Wikipedia

Gilligan’s Planet was an animated TV series produced by Filmation and was the second spin-off of the popular TV sitcom, Gilligan’s Island. 

The show lasted just 1 season and was off the air within 3 months of its first broadcast. 

(24) Rubik, the Amazing Cube (1983)| 1 Season | 13 Episodes

Source: Wikipedia

Rubik, the Amazing Cube aired in 1983 and re-runs were aired up until 1985. 

The show was produced by Ruby-Spears Enterprises and followed the story of Rubik (a literal Rubik’s cube) that came to life in a solved state and went off on adventures with a group of children, avoiding the recapture of the magician who lost him. 

This show fits the 1980s mold as television content that doubled as marketing efforts for a children’s product. 

(25) Thundarr the Barbarian (1980–1981) | 2 Seasons | 21 Episodes

Source: Wikipedia

Thundarr the Barbarian was also produced by Ruby-Spears and famous comic book artist Jack Kirby assisted with production design for the show. 

The show had popular ratings at the time, but was canceled due to programming scheduled limitations. The series was bumped in favor of Laverne & Shirley.  

(26) Little Rosey (1990) | 1 Season | 13 Episodes 

Source: Wikipedia

Little Rosey was produced by Nelvana and aired on ABC for just one season. 

The show was an attempt to leverage Roseanne Barr’s rising popularity (her comedy series was #1 in primetime ratings from September 1989 to April 1990) and the trend of cartoons taking popular characters and depicting them as children. 

The show received poor ratings and was not renewed for a second season. 

(27) Spawn: The Animated Series (1997–1999) | 3 Seasons | 18 Episodes 

Source: Wikipedia

Spawn: The Animated Series ran on HBO and was more suited for adults and even won an Emmy Award in 1999 for Outstanding Animation Program. 

From the outside, it’s not accurate to call this show a failure, but it’s important for this audience to understand that it was still canceled for a reason despite success. The show was ranked 5th for “The Greatest Comic Book Cartoons of All Time” as the show was based on comic book character, Spawn. 

Despite the success, the show’s 3rd season is “widely viewed as the weakest of the show’s run” and HBO was ceasing its animation division.

(28) Batman: The Animated Series (1992–1995)| 2 Seasons | 85 Episodes 

Source: Wikipedia

Batman: The Animated Series was produced by Warner Brothers Animation and initially aired during prime time on Fox. 

The show was well-received and is based on one of the most popular superheroes of all time, so why did it last just 3 seasons? 

Kevin Conroy, the voice actor for Bruce Wayne / Batman, put it simply, “creators ran out of ideas for stories. And they didn’t want to compromise on the quality of what they had and start creating kind of silly stories” 

(29) The Critic (1994–1995) | 2 Seasons | 23 Episodes 

Source: Wikipedia

The Critic was an animated series about the life of a New York film critic, voiced by Jon Lovitz (Saturday Night Live, Rat Race, The Wedding Singer) and was created by two writers who had previously written for The Simpsons. 

The show had a strong team in place and slotted an air time right after The Simpsons in hopes to capture its audience. 

Even though the show accomplished this (retaining 90% of the Simpsons audience) Fox decided to cancel the show in favor of using the 8:30 pm time slot to test a new show. 

It was later reported that a network executive simply didn’t like the show and pulled it. 

(30) Gargoyles (1994–1997) | 3 Seasons | 78

Source: Wikipedia

Gargoyles was produced by Walt Disney Television and aired for 3 seasons. The show followed Gargoyles who came alive at night to protect New York City. 

The show was popular, and did show as re-runs through 2012, but was canceled because it “didn’t perform up to expectations” according to show creator Greig Wiesman. Disney was hoping it would outperform Mighty Morphin’ Power Rangers but it didn’t happen. 

This is one example of many shows that achieved some success but not enough so to sustain it over a period of time longer than 3–4 seasons. 

(31) The Angry Beavers (1997–2001) | 4 seasons | 62 Episodes 

Source: Wikipedia

The Angry Beavers was created for Nickelodeon and premiered in 1997. 

It did have a four-season run, but the project was over budget, behind schedule and losing popularity. 

The show creators even wrote a script to go out with a bang that featured the two main characters realizing they weren’t real and were just cartoons. Nickelodeon did not allow that final episode to air and canceled the show in 2001. 

(32) Dr. Katz (1995–2002) | 6 Seasons | 81 Episodes 

Source: Wikipedia

Dr. Katz was a TV show that put budding Comedy Central on the same level as other animation networks. The show did run for 6 seasons and in the medium term, was a success for the network. 

The show was about a therapist listening to patients' calls (comedians would play the patients), which attracted an older demographic of viewers. 

Two years after Dr. Katz was released, South Park was aired and it became a defining hit (which is why it’s in our list of top 3 shows). 

South Park appealed to the audience Comedy Central was after, which led to their decision to cancel Dr. Katz. 

(33) Animaniacs (1993–1998) | 5 Seasons | 99 Episodes 

Source: Wikipedia

Animaniacs was created by Tom Ruegger for Fox Kids (and moved to The WB in 1995). The show was produced by Amblin Entertainment, which was founded by successful director and producer Steven Spielberg. 

Ruegger did an Ask Me Anything thread on Reddit 5 years ago and someone asked what caused the cancellation of the show. 

He responded by saying: “Kids WB was handed Pokemon for free and it pulled down big numbers — so then they wanted everything for free.”

Animaniacs was too costly to Kids WB and thus, it was canceled. 

(34) Fish Police (1992) | 1 Season | 6 Episodes 

Source: IMDB.com

Fish Police was produced by Hanna-Barbera based on a comic book series that was developed by Steve Moncuse. 

The show only lasted 3 episodes before low ratings caused it to be halted. 

Because The Simpsons was monstrously successful, other networks wanted to compete and produce animated shows that geared toward adults. This was one of three attempts by Hanna-Barbera to create a show that rivaled The Simpsons. 

(35) Capitol Critters (1992) | 1 Season | 13 Episodes

Source: Wikipedia

 Capitol Critters followed the story of mice, rats, and roaches who lived in the crevice of the White House and featured Neil Patrick Harris as one of the voice-over actors. 

Hanna Barbera produced the show, but only 7 episodes aired. 

In 1995, Cartoon Network aired the full 13-episode season, but the show was never renewed. 

(35) Family Dog (1993) | 1 Season | 10 Episodes

Source: Wikipedia

Family Dog was on air for about a month before being pulled despite the talented crew behind it. Steven Spielberg and Tim Burton were executive producers, Danny Elfman was the theme music composer. 

Despite such a talented team behind the project, the show was a failure, described as “one of the biggest fiascos in television animation history, on both a creative and commercial level.” 

(36) Escape from Jurassic Park (1993) | Never Aired  

Source: lostmediawiki.com

Escape from Jurassic Park was canceled before it could even air. The show was based on the hit movie Jurassic Park during a time when many popular movies were getting animated TV series to accompany them. 

A trailer for the series was sent to Steven Spielberg (Direct of the Jurassic Park movie) and after he decided not to watch it, the show was canceled. 

(37) The Brothers Grunt (1994–1995) | 1 Season | 42 Episodes

Source: Wikipedia

The Brothers Grunt was a different approach to an animated series as episodes ran between 4 to 7 minutes in length and was created by Danny Antonucci (Ed, Edd, n Eddy). 

It was canceled shortly after it aired, as it wasn’t positively received by MTV’s audience. 

(38) Ahh! Real Monsters (1994–1997)| 4 Seasons | 52 Episodes

Source: Wikipedia

Klasky Csupo was responsible for creating the popular show Rugrats, and Nickelodeon wanted them to re-create that success, thus Ahh! Real Monsters was born. 

Paramount Pictures became interested in producing a movie for the show but ultimately decided against it. The show was canceled in 1997. 

(39) Megas XLR (2004–2005) | 2 Seasons | 26 Episodes

Source: Wikipedia  

Megas XLR was created for Cartoon Network and was about two characters who discover a robot from the future, Megas (Mechanized Earth Guard Attack System) in a junkyard. 

The series was canceled after two seasons due to low ratings. 

However, the show did develop a fan base, some even calling for the show's revival, but it has yet to happen. 

(40) Invader Zim (2001–2002) | 2 Seasons | 27 Episodes 

Source: Wikipedia

Invader Zim was created for Nickelodeon but was canceled part of the way through its second season after its ratings declined. 

Despite the show's initial popularity, its quick cancellation was likely due to mounting cost to produce the show and waning interest from fans. 

(41) Avatar: The Last Airbender (2005–2008) | 3 Seasons | 61 Episodes

Source: Wikipedia

Avatar: The Last Airbender TV series was created for Nickelodeon and was popular upon release. The show had strong ratings and has even been called the best show of all time. 

So, why is it on a list of failed animated TV shows? 

Because in spite of its popularity, critical acclaim, and quality music, animation, and scripts, it was still canceled. 

It’s been said that the show was canceled in favor of a movie adaptation directed by M. Night Shyamalan. The movie was a failure and currently has a score of 4.0 / 10 on IMDB.com. 

The Lesson: Good IP can be squandered with incorrect strategic moves. Please remember this when investing in NFTs. 

(42) American Dragon: Jake Long (2005–2007) | 2 Seasons | 52 Episodes 

Source: Wikipedia

At the time of its release, creator Jeff Goode said it was “the number one or number two animated show on the Disney Channel”. There was even a cross-over with Jake Long appearing in an episode of Lilo & Stitch. 

However, the show about a character balancing his teenage life with his ability to change into a dragon was canceled after 2 seasons. 

There was a push to make a 3rd season but it was never approved. 

(43) Clerks: The Animated Series (2000–2002)| 1 Season | 6 Episodes 

Source: Wikipedia

Clerks: The Animated Sitcom was created by Kevin Smith and based on characters from the Clerks movie. 

Smith hyped up the show and said “the first episode is guaranteed to have the biggest audience of anything we’ve ever done.”

Despite Smith’s background and previous success, the show only aired 2 episodes. 

At the time, ABC was in 3rd place as a network and was willing to take a chance on the show, but once Who Wants to Be a Millionaire brought a large audience to ABC, they decided not to continue the risk on Smith’s show. 

(44) Chowder (2007–2010)| 3 Seasons | 49 Episodes

Source: Wikipedia

Chowder was created by C.H. Greenblatt for Cartoon Network and won a Primetime Emmy Award and garnered 6 Annie Award nominations. 

The show was successful but ended up being canceled due to a change in the network’s strategy. Cartoon Network was attempting to remain competitive with Nickelodeon and Disney’s live-action content, and Chowder didn’t fit the mold or attract the target demographic they were hoping for. 

(45) Sabrina: The Animated Series (1999–2000)| 1 Season | 65 Episodes

Source: Wikipedia

Sabrina: The Animated Series was based on the comic of the same name and was a spin-off of the popular live-action Sabrina The Teenage Witch TV show. 

Despite piggy-backing off of a TV series that premiered with 17 million viewers, the animated version of the show last just 1 season before being canceled. 

(46) Time Squad (2001–2003) | 2 Seasons | 26 Episodes 

Source: Wikipedia

Time Squad was created for Cartoon Network set in the future and followed three “time cops” who were charged with correcting the course of history. 

The show was canceled in the middle of its production during season 2.

(47) Sym-Bionic Titan (2010–2011) | 1 Season | 20 Episodes

Source: Wikipedia

Sym-Bionic Titan was another animated series created for Cartoon Network but was short-lived (it aired from September 17th, 2010, and stopped on April 9th, 2011). 

It’s been reported that the show was shut down for financial reasons and for the fact that “it didn’t have enough toys connected to it.” 

(48) Motorcity (2012–2013) | 1 Season | 20 Episodes

Source: Wikipedia

Motorcity was an animated TV series created for Disney that lasted just 1 season. 

The decision to cancel the show was criticized by fans, who felt like they never gave it a chance to develop a larger fanbase. 

Fans point to leaked episodes, little advertising, episodes shown out of order, and an oft-changing time slot as reasons that contributed to the show's demise. 

(49) Courage the Cowardly Dog | 4 Seasons | 52 Episodes

Source: Wikipedia

Courage the Cowardly Dog was an animated series created for Cartoon Network by John R. Dillworth and lasted 4 seasons. 

The show was widely regarded by fans, and some are still puzzled by its cancellation but many point to the fact that the show contained horror elements not suitable for children. 

(50) Wolverine and the X-Men (2009)| 1 Season | 26 Episodes

Source: Wikipedia

Wolverine and the X-Men TV series was the fourth series adaptation leveraging X-Men characters. 

Despite leveraging iconic intellectual popularity during the rise of superhero movies, the show was canceled after just 1 season due to poor ratings.