According to WB, "In LEGO Batman 2, the Dynamic Duo of Batman and Robin join other famous super heroes from the DC Universe including Superman, Wonder Woman and Green Lantern to save Gotham City from destruction at the hands of the notorious villains Lex Luthor and the Joker."

from
http://uk.ps3.ign.com/articles/121/1215801p1.html
Also :lol::lol::lol: at a comment on there :
So its official, the best Superman game ever made is a Batman game![]()
Sooooo true