Fighting Style: Shang Chi
Brain: Charles Xavier
Skill: Perfect Timing
Offensive Weapon: Adamantium sword
Defensive Weapon: Adamantium/Vibranium alloy full plate armor and helm
Fighting Style: Iron Fist
Skill: Mantis' control over her body
Offensive Weapon: Ragman's cloak (Great Collector Artifact)
Defensive Weapon: Black Panther's vibranium-weave suit
The fighting stage is the Arena, a 100x100-yard square. Both opponents start on opposite sides of the Arena, west and east respectively. There is bullet-proof shielding every 10 yards in straight lines across the arena; there is 10 feet of space between every individual piece of shielding. Opponents may not leave the arena or use anything from outside of the arena, but they may use anything within the arena to their benefit.
Good luck, Ultimate. You have the honor of the first post.