[MsMarvelDuckie]

Originally Posted by Utrommaniac

I really think that's a dynamic that could have been built up in later versions of a TMNT cartoon, but since Nick/IDW, I don't think they're going to go anywhere beyond being actual enemies who could tear each other to pieces if they got the chance.

A show outside of the 80's writing style probably could go into their "business" relationship actually developing into that degree of friendship.

I played with it a bit in a couple of my fics. Love Is Shell essentially takes their OT relationship and conrinues it, while in Some Other World I delved into a more friendly ribbing type like Casey and Donatello had in the first movie. Trading insults as a game while actually being trusted friends. (Shredder and Krang are actually the GOOD guys in that one!)