Here are the results from the previous round:
Harley Quinn vs. Two-Face 11-8
The Huntress (Helena Wayne) vs. The Penguin 14-5
Beast Boy vs. Black Manta 10-9
General Zod vs. Aqualad (Kaldur'ahm) 9-10
Metamorpho vs. Bronze Tiger 13-6
Star Sapphire (Carol Ferris) vs. Black Adam 9-10
Kid Flash (Bart Allen) vs. Gorilla Grodd 12-7
Ra's Al Ghul vs. Jonah Hex 13-6
You vote for the one who you like more, not who's the strongest in a fight and have fun:
Kid Flash (Bart Allen) vs. Black Adam
Ra's Al Ghul vs. Aqualad (Kaldur'ahm)
Metamorpho vs. Harley Quinn
The Huntress (Helena Wayne) vs. Beast Boy