The Adventures of Super Mario Bros. 3 episode Sneaky Lying Cheating Giant Ninja Koopas
September 08, 1990
The Sneaky Lying Cheating Giant Ninja Koopas are obvious parodies of the Teenage Mutant Ninja Turtles, both being ninja turtles, plus being brothers and teenagers. When transformed, the Koopalings also wear martial arts belts and bandanas, only all black rather than being differently colored, and while attacking Prince Hugo's castle, they're also seen weilding some of the TMNT weapons, specifically: Bully weilds a bo, originally Donatello's weapon; Cheatsy weilds a nunchuck, originally Michelangelo's weapon, Kooky weilds a katana, originally Leonardo's weapon; Big Mouth doesn't weild any weapon while attacking, but in a later scene he's oddly seen weilding the bo, while Bully weilds the nunchuck. Additionally, after they succesfully kidnap Prince Hugo and the other characters, Big Mouth Koopa says "I love being a Koopa!" which is a parody of the TMNT catchphrase from their first film, "I love being a turtle!"
When Mario is transformed, he obtains a karate kimono, red belt and white bandana with his "M" on it, thus not directly referencing the TMNT, however he calls himself "Good Truthful Honest Giant Ninja Mario".
In the closing scene, as the parrot transforms himself with the wand, he only obtains a black belt.
August 11, 2000
Series 1 (direction template) Series 2
The Koopa Bros. enemies in Paper Mario are based on the Teenage Mutant Ninja Turtles since are four brothers wearing differently colored bandanas. Their colors are red, black, yellow and green rather than red, blue, orange and purple, and apart from the bandana, they also sport shoes and shells of the same color.
In the game they're said to were originally inhabitants of Koopa Village who then left in search of adventure, considering their village too boring. They then settled into a fortress inhabited by Bob-Ombs, who at first received them well, but eventually the four Koopas started enslaving them and turned the fortress into their own Koopa Bros. Fortress.
The player meets them in Koopa Bros. Fortress, where they first show up controlling a mechanic clone of Bowser, and are then fought one all four at the same time. This fight and their background don't sem to directly reference the TMNT series.
Teenage Mutant Ninja Turtles: Fast Forward episode The Gaminator
December 16, 2006
The fourteenth episode of Teenage Mutant Ninja Turtles: Fast Forward, corresponding to the 131st episode of the second Teenage Mutant Ninja Turtles animated series, is about the four turtles being sucked into a videogame console. While inside a game called "Swampinator", Michelangelo comments that to be "the greatest platformer since Super Fabio Brothers", obviously a reference to Super Mario Bros.
Mario's company Nintendo, as well as Teenage Mutant Ninja Turtle's 4Kids Entertainment had no right over the other series' properties, in fact they only included minor references to the other series.