TMNT Reboot: Rocksteady

It's the 25th Anniversary of TMNT and I have been a fan since the beginning. I'm sure a LOT of people are doing it, but I decided to put my spin on the characters from primarily the toy line/cartoon.
Here is Rocksteady! Mutant G.I. Mauler and Shredder's #1 Thug! This is version 1, I drew him after mutation.
Let me just say this was NOT easy to do. This was a challenge for me. I'm still not exactly thrilled with this, but I don't think it sucks either.