*assume all powers and abilities work even without the correct context
*assume no one is "immune" (remember Marvel Zombies verse before screaming for Wolverine).
*assume the futility of this endeavor. Lol.
Most Helpful Guy
Deadpool was immune... Until the zombies all turned into deadpools, which was even worse than zombies.
Merlin from the sword and the stone.
Genie from Aladdin.
Hades from Hercules. Seems like Hades could do something about the undead.
Vision from the avengers.
The adult version of Lewis from Meet the Robinsons.