Character Design Challenge 2 - Development

This design challenge was to produce a design for a Sci Fi MMA fighter that would fight in the galactic version of the UFC. 

The idea was to create a character that would pose a different challenge to an MMA fighter while still being familiar enough anatomically to take on humans.
I was trying to play around with a style half way between the realistic style and the more cartoony, characature style i used to favor. The reason for this is for speed of production when reproducing the character(s) for sequential pages.
The other part of this challenge is to take one of these forward and produce a short 1 or 2 page strip depicting a fight scene featuring one of the characters, giving me an exercise to explore layouts.