Spent way too long trying to think of a decent second but finally came up with something.
1.
Card Shark "Ace"
Based On: Magicman
Battle Style: Abilities include drawing from themed decks of special cards for random themed effects, and abilities to manipulate both the contents of said decks and the drawing of them.
Appearance: An android originally commissioned by a high end casino, his appearance is similar to a tall man in his late thirties wearing a formal suit. A deck of standard playing cards is visible in a front pocket.
Personality: Usually calm, he likes to press his luck when not at a disadvantage.
2.
Artillery Captain "Artix"
Based On: Napalm man
Battle Style: Extremely powerful cannon attacks that require Artix to first actually root himself to the ground to absorb the shock of them. Extremely slow
Appearance: A vaugely human shaped robot covered in extremely thick armor. On his feet are a series of spiking mechaisms that he can use to dig into the ground to give himself a stable platform to fire on. His right arm is considerably bulkier than his left as it contains his artillery cannon which collapses down inside of it when not in use.
Personality: An old military prototype repurposed for the arena, he enjoys combat. In general he gets along well with others, especially other fighters.