The Navy SEAL. Aquatic sea mammals aren't known for being trained in gorrila warfare, after all. Curry vs wasabi.
Hm. Two nigh invulnerable beings with near unlimited power. I'll personally have to go with Emps, but its a tossup Failbaddon the Armless (Abaddon) vs two dozen Orks
I bet the Orks. If Abbadon was actually competent, Chaos would have needed only a single Black Crusade. Napoleon vs Caesar in a game of chess
Napoleon, Caesar died long before chess was invented, thus he wouldn't know the rules. Schnitzel vs. schnitzel
Batman. He had a plan to take down everyone in the entire Justice League. I'm sure him working out Prime quickly would be fairly easy. Celestia vs Luna, no Elements of Harmony
While I did enjoy Cucumberpatch's performance, Montalban will always be the best Khan. Robert Downey Jr. vs Benedict Cumberbatch in a boxing match.
Spike. The fight would inevitably come down to hand-to-hand, and Spike is a master of Jeet Kune Do. Revy (Black Lagoon) vs Spike Spiegel.