I know nothing about 'tooth, but Felix was pretty OP...
Even as a child(before being injected with the Talon serum that massively amped his physical stats), Felix was capable of lifting/holding the full weight of a locomotive:
https://i.imgur.com/Hv67wKq.jpg
He was also capable of effortlessly slaughtering Talons:
https://i.imgur.com/1zr84Zb.jpg
He also stomped the living shit out of the hyper-amped Calvin Rose(with all his gear) easily:
https://imgur.com/a/hozi8
And after being blown into several pieces/decapitated, Felix STILL wasn't dead and actually began healing... He has to be kept in an absolute zero prison indefinitely to prevent his return:
https://i.imgur.com/b4JfXVh.jpg
https://i.imgur.com/4ZGa7WL.jpg
