Juggernaut vs. Nekron
Battle takes place in the Microverse. Inside of a microwave. The microwave has a 12 and 5/8-inch-diameter turntable inside of it, and it's just been turned on for ten minutes at the beginning of the battle so both opponents are spinning while they fight. Furthermore, there are two frozen chimichangas in the microwave, so during the fight as they heat up they will pop occasionally and burn both combatants. Also, the inside of the microwave is white, but the outside of it is black.
Who wins? No BFR.