Characters created for, and exclusive to, the 1987 Fred Wolf-produced TMNT cartoon. For tropes relating to characters who originally appeared in other incarnations or were created here and went on to appear elsewhere, please visit the franchise character page. Note: All the characters here are canon foreigners, so noting that for every individual character is unnecessary.
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Friends and allies
April O'Neil's boy crazy best friend. She has a crush on Donatello, though shows interest in several male characters throughout the series.
Tropes associated with Irma:
April's cameraman, who is constantly trying to climb the corporate ladder and steal April's job.
Tropes associated with Vernon:
Burne ThompsonThe boss of Channel 6 news. He's very bossy, and hates the Ninja Turtles, disliking it when April's reports view them in a positive light.
A human college student who was mutated into a lizard and fell in love with Raphael.
Tropes associated with Mona:
CarterA college student who seeks out Splinter in order to gain some ninja training. Becomes an ally of the turtles in their fight against Dregg.
Tropes associated with Carter:
Punk FrogsA group of frogs who help the turtles.
ZackA young boy who considers himself the "Fifth Turtle".
NeutrinosA group of elf-like aliens from Dimension X who act like beatniks. Their dislike of authority and war made them fugitives in their home dimension. Kala, the female of the group, develops a crush on Michelangelo.
An alien warlord from Dimension X with aspirations to take over Earth. Stop us if this sounds familiar...
Tropes associated with Dregg:
Hi TechDregg's minion
MungHi Tech's replacement in Season 10
Lotus BlossomA merceneary hired by Shredder
ChronosHe used to be a man named Winston Fripp. He robbed a bank only to be captured by the Turtles and left tied up in a clock tower for the police. It was hours before the police found him, and by then he was driven insane by the ticking of the clock and the ringing of the bell. He returned years later as the supervillain Chronos to help Dregg defeat the Turtles.
Don TurtelliThe head of a major crime syndicate in New York. He is the grandson of Tony "The Tickler" Turtelli. Turtelli went down in infamy for his torture methods, which he inherited from his grandfather. He specializes in the interrogation of people he captures through tickle torturing the soles of his victims' feet with a feather to make them talk Including April, Vernon, Zach and his friend Caitlyn.
TitanusThe leader of the organization H.A.V.O.C., he's a mutant who traveled to the present day from the future to take it over while humanity was much more vulnerable.