It's week two of the Injustice: Gods Among Us tournament and the Joker is representing the Batman side of things this time around. The Clown Prince of Crime will be facing off against Superman villain Lex Luthor. Fans can vote on who they want to win and a new game play video of the fight will be released on Friday. To vote on this week’s battle and be eligible to win prizes, visit: injustice.dccomics.com.