Hulk-Buster Titania. I'm here for it!
She-Hulk *barely* by the skin of her teeth takes down the Hulk-Buster, and the wreckage rips open from the inside, and it's a fresh-as-a-daisy Titania, ready to lay down the smack. "No fair! The Hulk-Buster was supposed to be the threat, the pilot's supposed to be some scrawny tech dweeb!"
Daredevil: Kingpin
Dr Strange: Dormammu
Spider-Man: Kraven (designing this on “Hunted”)
Captain America: Red Skull (with cosmic cube)
The Avengers: Ultron
The Hulk: The Leader