Quint

Dude, he's totally in, trust me.

Don't Believe Me?
He was in Season 2, Episode 11, it's just that his fight was never recorded. OP now refuses to use him out of shame. Poor bastard.

The Cartel Rumble Season 1
After getting thrown out of TFR for trespassing and a restraining order was placed on him, he decided to try get into TCR via the delivery trucks before getting caught by TCR staff. TCR, who was in need of talent at the time just shrugged their shoulders and hired Quint because "This guy is clearly delusional and we think that can help make us some pennies!"

TCR Season 3
Sadly, he got trapped in some death game mumbo jumbo, but it was all part of his theory, so he knows exactly how to get out of this one. Problem is, he forgot which one of his theories was the correct one, but he'll probably will figure it out eventually.

Feats

 * Beat HUNK, Demon King Todd, The Bogdanoffs, Mr. America, Battler, Bane, Senator Armstrong, Adachi, Jacket, Leon, Chris, and Pegasus all at once
 * Is too powerful to ever appear again
 * Made Chris and Leon wake up from their comas out of fear of his power and then beat them up so badly they went into another coma for a week
 * Is too powerful to be shown on camera, unless it's a clone, in which case they can just barely be shown on camera if they hold back their power to .00000000000001%

Trivia

 * Trust me bro, he's in. Totally.
 * Is either Cole Quinn's true form (including not being retarded) or related to him somehow