Boring villains that don't deserve to be in the stories they inhabit

[Original TMNT Cartoon Fan]

Originally Posted by Cryomancer

The Shredder a lot of the time, really. I wish TMNT could learn to move on from him once in awhile.

In a new series, I would say: Keep him the main villain durig season 1, defeated by the end. Make him return quickly during early-season 2 for another defeat. Then, let it be over for good, No more comeback!