Board Thread:Questions and Answers/@comment-4764791-20170424015926/@comment-16461120-20170424194619

Scott.lagan wrote: Maybe. But then why does it also say that those are the first appearances of those characters, if they're the 616 versions? And going to Asgard doesn't change the history of someone. Because it was their first appearances, they're not the 616 versions, they're simulacrums which existed in a unique Pocket-Dimension of Earth-616 alongside their primary iterations.

It's not going to the pocket-dimension that changed their histories, it's their creator who made them that way within the pocket-dimension from their very inception.