Johnny Galecki is a Belgian-born American actor, best known for his roles as David Healy in Roseanne, Rusty Griswold in National Lampoon's Christmas Vacation, and as Leonard Hofstadter in The Big Bang Theory.
The multiverse gets worse as both fan favorite characters of the marvel/DC universe collide in a full out war join this story as it stars our favorite heroes and villians of both DC & Marvel
