Suggestions by @jedahdohma
21 suggestions

Christoph Waltz
as Doctor Octopus in Spider-Man (Webbverse)
Dov Tiefenbach
as The Fifteenth Doctor in Pairing The Doctors of The Revival with Monsters/Villains of The classic era

Tractators
as The Fifteenth Doctor in Pairing The Doctors of The Revival with Monsters/Villains of The classic era

The Black Guardian
as The Fifteenth Doctor in Pairing The Doctors of The Revival with Monsters/Villains of The classic era

The sea devils
as The Ninth Doctor in Pairing The Doctors of The Revival with Monsters/Villains of The classic era

The Valeyard
as The Tenth Doctor in Pairing The Doctors of The Revival with Monsters/Villains of The classic era

Fenric
as The Eleventh Doctor in Pairing The Doctors of The Revival with Monsters/Villains of The classic era

The Chameleons
as The Fifteenth Doctor in Pairing The Doctors of The Revival with Monsters/Villains of The classic era

The Voord
as The Fifteenth Doctor in Pairing The Doctors of The Revival with Monsters/Villains of The classic era

The Nimons
as The Thirteenth Doctor in Pairing The Doctors of The Revival with Monsters/Villains of The classic era

The Mara
as The Twelfth Doctor in Pairing The Doctors of The Revival with Monsters/Villains of The classic era
Benicio del Toro
as Morbius, the Living Vampire in Spider-Man Raimiverse Rogue's Gallery
Kate McKinnon
as Livewire in DCEU

Adrien Brody
as Max Dillon in The sinister six (2009)

Ben Foster
as Electro in Spider-Man Raimiverse Rogue's Gallery

Jim Carrey
as Electro in Spider-Man Raimiverse Rogue's Gallery

Mads Mikkelsen
as The Chameleon in Spider-Man Raimiverse Rogue's Gallery

Scott Adkins
as Kraven the Hunter in Spider-Man Raimiverse Rogue's Gallery

Arnold Vosloo
as Scorpion in Spider-Man Raimiverse Rogue's Gallery
Elijah Wood
as Quasimodo in War of the Monsters ( Dark Universe crossover )