Here are the results from the previous round:
Loki vs. Thanos 13-10
Iron Fist (Danny Rand) vs. Black Bolt 8-15
Black Widow (Natasha Romanoff) vs. Mr. Fantastic 15-8
The Hulk (Bruce Banner) vs. Crystal 11-12
You vote for the one who you like more, not who's the strongest in a fight and have fun:
Black Widow (Natasha Romanoff) vs. Crystal
Black Bolt vs. Loki