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First: WTF Is captain marvel doing it's like she just there to deliver iron man
Second:how do they all lose to their past self
Third:when thanos go to alternate timeline doesn't that mean the future on that timeline are affected?
Fourth: this is spoilers,that blue alien is actually still loyal to thanos she is a secret spy
Fifth: ant man is called antman cause he can stomp you like an ant,man
Sixth:so at the ending of endgame how old is captain America exactly

And also where are stan lee?, Is it just humor that he is on endgame?

stan lee is um.. dead

Yeah, but I heard before his death they got to shot a screen with him.guess that was a gossip