The Noxious Avenger
Teenage Mutant Ninja Turtles (2012 TV series) episode
Season Code: 315
Episode: 67
Original airdate April 26, 2015
Written by Todd Casey
Producers: Brandon Auman
Directed by Alan Wan
Voice Direction Andrea Romano
Supervising Director  Ciro Nieli
Episode chronology
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"Casey Jones VS. The Underworld" "Clash of the Mutanimals"

Teenage Mutant Ninja Turtles Season 3
October 3, 2014 - September 27,2015
List of Teenage Mutant Ninja Turtles episodes


  1. Within the Woods
  2. A Foot Too Big
  3. Buried Secrets
  4. The Croaking
  5. In Dreams
  6. Race with the Demon
  7. Eyes of the Chimera
  8. Vision Quest
  9. Return to New York
  10. Serpent Hunt
  11. The Pig and The Rhino
  12. Battle for New York, Part 1
  13. Battle for New York, Part 2
  14. Casey Jones VS. The Underworld
  15. The Noxious Avenger
  16. Clash of the Mutanimals
  17. Meet Mondo Gecko
  18. The Deadly Venom
  19. Turtles in Time
  20. Tale of the Yokai
  21. Attack of the Mega Shredder!
  22. The Creeping Doom
  23. The Fourfold Trap
  24. Dinosaur Seen in Sewers!
  25. Annihilation: Earth! Part 1
  26. Annihilation: Earth! Part 2

Season 1Season 2 - Season 3 - Season 4 - Season 5

"The Noxious Avenger" is the fifteenth episode of the third season of the 2012 TV series, and is the sixty-seventh episode overall in the series. It first aired on April 26th, 2015.


A new mutant called Muckman starts to gain notoriety as New York City's "Monster Hero".


Major Characters

Minor Characters


The episode begins with Garson Grunge, the garbage man, picking up garbage from the dumpster and is thankful that he does not have to work in the sewers anymore. Bebop and Rocksteady sneak into the nearby building housing Kraang's lab and Bebop acquires Mutagen and Reagent-X, while complaining about having to run Baxter Stockman's errands. The turtles arrive soon after, while being spotted by Grunge.

During the fight, Bebop throws the mutagen at Michelangelo's head. Mikey ducks and the mutagen breaks open in Grunge's face, sending him falling into the dumpster as he begins to mutate. Bebop and Rocksteady escape with some chemicals. Grunge wakes up, finding himself completely mutated into a pile of garbage and holding the turtles responsible. Grunge's eyeball, named Joe, convinces him that he can put his new look to good use, convincing him to stop the Purple Dragons from mugging someone nearby. A witness panics upon seeing him but the victim calms her down by telling her that he saved him. Joan Grody, who was reporting about the invasion, overhears and runs the new story, calling New York's newest hero Muckman.

The turtles catch the story and believe that Muckman may be up to no good, despite April O'Neil's suggestion that he is called a hero. They all agree that they need to find him before the Shredder does. The turtles ambush Muckman, who retaliates with a garbage tornado and sludge puke, knocking them down before fleeing from reporters and fans. April warns the turtles to leave and Mikey throws down a smoke bomb--but not before Joan catches a silhouette of the Turtles.

Later that night, April, Splinter and the Turtles were watching the news. When it got to the part where the Turtles were seen, Splinter was taking it all in while April was wishing that Joan would talk about something else to avoid the Turtles from getting busted. However it was too late. When Splinter found out about his sons being on TV, he was incredibly furious. The Turtles were in hot water after the news was over. For breaking the ninjitsu code, the Turtles ended up getting grounded from leaving the lair. If that wasn‘t enough, the Turtles especially Mikey were not even allowed to watch TV including Crognard The Barbarian.

Rocksteady complains about getting another chemicals run while Bebop suggests they need a "sucker" when they catch Muckman on the news. Rocksteady suggests that they use him to get the next ingredient.

Donatello runs some tests on the mutated puke and realizes that it can affect their own mutations. Splinter comes in to confiscate the rest Mikey's Crognard-related things, much to Mikey’s dismay. Leo decides that it is time to prove to him that they can be ninjas by sneaking out of the lair. With April‘s help with the exit by distracting Splinter, the Turtles succeeded. Splinter was not happy about that.

Bebop and Rocksteady look for Muckman, who attacks them until they tell him that they are his side. Muckman is led to believe that they were mutated by the turtles and agrees to help them get the chemical they need, thinking that it is a cure. The turtles arrive and Muckman attacks them with Rocksteady and Bebop. Joe continues urging Muckman to do the right thing, the turtles agreeing with him. Bebop hits everyone with a flash bang grenade and Rocksteady throws Muckman into the Kraang lab.

Muckman finds the chemical and takes it before being hit by the Kraang security system, Rocksteady takes the chemical from him as the turtles rush in. Muckman retaliates against Bebop and Rocksteady by puking on them, which in turn destroys the chemical. As Bebop and Rocksteady retreat, Joe urges Muckman to do what is right so he apologizes to the turtles for accusing them of any wrong doings. The gang spot Joan and her cameraman searching the warehouse and Muckman distracts her while the turtles escape.

Back in the lair at the Practice Room, Splinter was not happy with the Turtles for leaving the lair. Leo explains to Splinter that they everything was fixed and shows him footage of a news bulletin. Muckman explains the turtle mutants do not exist and are probably just some kids in costumes to the media. The turtles sigh in relief that their identity is still a secret to the world. Splinter was not buying it. The Turtles are still in hot water, and Splinter he knocks all of them out with one hit. April, who was present during the whole thing, secretly tries to escape but Splinter appears startling her right at the spot. It was probably her turn to get punished.


  • The title of the episode is a reference to the 1984 horror comedy film The Toxic Avenger.
    • Splinter is at his angriest point in this episode as he snaps at the Turtles for being found out and grounds them for the whole episode.
    • Muckman speaks with a Jersey accent and has a license plate from New Jersey in his body, as his concept art reveals that he is from Camden, New Jersey. References to The Toxic Avenger as it takes place in New Jersey.
    • The way Muckman beats up Fong, Sid and Tsoi is similar to when Toxie beats up Cigar Face and his Gang and he does a similar fighting style to what he did in the Toxic Avenger.
    • Muckman is similar to Toxie as they are both mutants and heroes to their respected homes.
  • This episode shares plot similarities to that of the 80's episode Muckman Messes Up:
    • In both episodes, Bebop and Rocksteady search for mutagen containing a specific ingredient at a lab. In the 80's cartoon, they search for X-7, a chemical that can undo the Turtles' mutation while in this episode they search for a chemical called Reagent-X for Shredder's Mind Control Serum.
    • The creation of Muckman has mutagen falling out of the lab and hitting a garbage man. Where as the duo throw out Mutagen in the 80's cartoon and it hits two garbagemen, this episode has Mikey dodging a thrown canister by Bebop which hits the garbage man who lands in a dumpster.
    • Muckman is the city's "Monster Hero" while in the original cartoon he calls himself and Joe Eyeball "Mutant Heroes."
    • Muckman weakens the Turtles by being near them in both episodes.
    • In both episodes, the Turtles are considered criminals by the media. Though April proves them innocent to Muckman and Joe Eyeball in the original cartoon, it is the end of this episode where the Turtles are proven fictional by Muckman himself.
    • Muckman blames the Turtles for his mutation and works with the Shredder, Bebop, and Rocksteady in the original cartoon and teams up with Bebop and Rocksteady in this episode.
    • Both versions have Muckman joining forces with the Turtles at the end.
    • Both involve Muckman turning against Bebop & Rocksteady and ultimately throwing slime at them.
    • In both episodes, Muckman thinks the Turtles mutated Bebop and Rocksteady.
  • Baxter Stockman's grocery list as seen in the episode consists of the following:
    • Reagent-X
    • 10 gallons maple syrup
    • 500 packets white sugar
    • Milk
  • When Splinter takes away Mikey's TV, there is an orange VHS tape that says "Ben & Stinky." This is a reference to Nickelodeon's classic cartoon, Ren & Stimpy, which was also released on orange VHS tapes.
  • This is the second episode in the series where the Turtles get grounded, following the Season 1 episode "I Think His Name is Baxter Stockman".



The Noxious Avenger/Transcript