Norman Osborn
Curt Connors
Hank Pym variant
The Lizard or the Sandman or the Hobgoblin
Curt Connors fits.
Doctor Octopus maybe
William Stryker
Or Uncle Ben if they ever do flashbacks in any future Spider-man movies
Magneto
kind of not sure on a MCU role, but I recognize him from who he played in Arrowverse's Flash.
I could see him as Deacon Frost in Blade movie.
https://www.google.com/url?q=https://marvel.fandom.com/wiki/Deacon_Frost_(Earth-616)&sa=U&sqi=2&ved=2ahUKEwi8puf366iKAxWbCnkGHUr1BDgQFnoECDMQAQ&usg=AOvVaw0AGEkOcSIGJGstRtvY8UXL
Bastion.
What do you think?
