These are some unused character designs during the Combat Core Kickstarter. It was for one of the later stretch goals. While that goal wasn't reached, the game was successfully funded and developed.
Combat Core is a multiplayer arena fighting game, with influences from Power Stone. I'm also just going to mention Ehrgeiz and Tobal (too), since those are of similar genre. The main character designs are by Robaato, so that's pretty slick and cool already :9
You can find it on Steam https://store.steampowered.com/app/405670/Combat_Core/ Check it out!