User blog comment:ElectricMayhem/Bringing Back The Marvel Animated Universe/@comment-11836-20111007011136/@comment-1713281-20111007130452

No, they all exist in different universes (according to handbooks and the appendix). The idea that they all exist in the same universe comes from the misconception that the animated Marvel series of the 90s were in one large universe, which some websites *cough*Wikipedia*cough*, continue to perpetuate. People often just assume that holds true today as well.