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.
Miles comes from a Puerto Rican/African American family and he comes into face with a new villain called the Prowler (Donald Glover) while also dealing with school.
