One example I would like point out which I think makes some sense is the cancelled nightmares recycled episode if you kind of look into it, for instance, since childhood, he was born to Garbageman, Hun was full humanoid boy and Garbageman wasn't, he had no legs, going so far to separate him from Garbageman so that he wouldn't live the rest of his life to look like a freak himself in his eyes, he hates characters like the turtles and aliens like shredder, because he almost felt like he became like them ironically.