Screwloose was adopted by Wingnut after a tragedy at the Space Circus took his parents' lives.
After finding out April's crystal could bring comic book characters to life, Mikey tries to use it to bring his favorite super heroes "Wingnut and Screwloose" to life as well. After Casey playfully teases him, the stray electricity hits the crystal bringing the characters to life. After a brief altercation thinking Mikey to be their nemesis "Tortoise Man" the four have a fun night stopping crime and helping people. After fighting Skullface McGillin, Michelangelo and Casey try to tell them that they came from a comic book which they do not believe. To prove this, they show them the crystal that brought them to life, whose power the two heroes become instantly obsessed with. After grasping the crystal, the two mutate into monstrous forms and fly off toward their bell-tower lair(also animated from the world of the comic). It is there that Wingnut and Screwloose realize that they were never real, but images projected into reality. Wingnut than believes that harnessing the power will make them "more real than the people in this world". After a fight with the turtles and Casey, April absorbs the excess energy making them insane, shortly before they accept their fictional existence and that they do not belong in their world. April then absorbs the energy that made them, as they bid them farewell.
- Much like how Wingnut resembles Batman, Screwloose bears a resemblance to the Dick Grayson version of Robin
- His overall appearance is identical to the classic Boy Wonder look.
- Screwloose's hairstyle and voice mannerisms is similar to the one of Burt Ward, who played Robin in the 1960's series.
- His backstory is a callback to the first Robin's origin.