Why Bebop worked for Shredder despite the humiliation

[neatoman]

You know, I thought it was strange that he would just follow the guy who would transform him into a pig against his will and hardly put up a fight. But then I found out, he was Shredder's prison bitch.
K0zguWTt49E
Yes, those are the same voice actors as Bebop and Shredder.