Lego Batman 2 DC Super Heroes (Wii U): Walkthrough 13: "Core Instability"

Crime Returns to Gotham City. Joker robs the harboured side theater but it soon put behind bars. Busted out, he and Lex Luthor work together to help Luthor win the election, as well as putting an end to Batman and Superman. Batman, Robin, Superman, and other members of the Justice League must unite to stop the Joker and Lex Luthor. With their plan foiled, Joker and Lex struggle to keep the Joker robot online with the Kryptonite leak. Robin rejoins Batman as they make the Joker and Lex chase them through Gotham to call the Justice League.