Chris Claremont Reveals Major Spoilers For 'Avengers: Secret Wars' Film: Robert Downey Jr. Playing More Roles Than Doctor Doom

Long-time Marvel Comics writer Chris Claremont, known for his run on the X-Men, seemingly spilled major spoilers for the upcoming Avengers: Secret Wars film.

As originally reported by Matt McGloin at Cosmic Book News, Claremont seeming…