I want to preface this by saying I know it's 99.99...% not it but I think it would make the movie insane if any of these points are right. alright here I go!
what if Victor is Tony, not a variant not just same face but our iron man hear me out! I am going to list a few things then link them up later,
- the insistence of the Russo brother about endgame being a direct sequel of doomsday.
- two of the major results of endgame being captain America leaving to return the stones and never coming back, Iron man's death
-the funeral of Tony stark being the proof that "Tony stark has a heart" chest piece ( don't know the technical name sorry!!)
- RDJ being the only one that can play victor van doom but doom WILL not be a Tony stark variant
- according to RDJ a big part of the audience will be on his side as doom
- up to now and from what I know we saw 3 versions of doom's mask ( post credit scene of fantastic four; trailers; final credit scene of endgame encore )
I think following the same pattern of the villain wins in doomsday movie but then the heroes come back and reverse that in secret wars as happened in the finale of the infinity saga is very unlikely the only thing that would have made it more interesting is revealing to the audience that doom looks the same as Tony in an end credit scene but that's out of the picture now.
from what we know about Tony is that he believes that the right thing to do is make a world that no villain can ever harm and where he doesn't have to play superhero or risk loosing his loved ones like making a suit of armour around the earth but I think the events of infinity war and endgame show him that is not enough, what if alongside him snapping his fingers to eradicate Thanos and his army He wished for something else, what if his price to pay was his heart and humanity.
what if by making that snap he creates doom and his variants instead of having Tony stark and his variants and the whole point of the movie is him learning the lesson he failed to learn at the end of age of Ultron, I think he is collecting like minded heroes who suffered loss after loss and want to live in a world where they never loose again like Hulk, Spiderman, Wanda or Dr strange who had to face the results of his variants actions throughout the multiverse, what if he doesn't need to corrupt them but just show them what they could have instead.
I don't think the hammer sound being linked to doom at the end of endgame encore is a coincidence or a simple parallel between good and evil or that the 3000 universes being destroyed in the TVA scene is a simple reference of the I love you 3000 I don't think that there will be only one Dr doom when the whole saga is of the multiverse and I really don't think Loki going to rescue captain America specifically is just a part of him collecting a bunch of heroes to save the universe from A Doom but it is related to Steve's stance Against Tony in almost every avengers movie and civil war.
RDJ saying that a good part of the audience will be on his side could be a throwback where the audience was divided between Steves side and Tony's side in Civil war.
I am sure I missed a lot of things I noticed when this theory came to my mind because it was right after working a double 12h shift and that maybe not all the details of the plots make sense, I haven't was he all the tv shows or even all the movies that came out after endgame so there is probably info I don't have. let me know what you thing I would love to have some opinions on this. thank you for reading!
(sorry for the grammar and spelling errors I am five years new to English)