Suggestions by @super_wahrrior

Fleetway Super Sonic

as The Reverse Flash in Casting Mario and Sonic Characters as Marvel and DC Characters

Princess Daisy

as She-Hulk in Casting Mario and Sonic Characters as Marvel and DC Characters

Pauline

as Rescue in Casting Mario and Sonic Characters as Marvel and DC Characters

Metal Mario

as Iron Man in Casting Mario and Sonic Characters as Marvel and DC Characters

Bluster Kong

as Iron Man in Casting Mario and Sonic Characters as Marvel and DC Characters

Tiptup

as Michelangelo in Casting Mario and Sonic Characters as Marvel and DC Characters

Miles "Tails" Prower

as Donatello in Casting Mario and Sonic Characters as Marvel and DC Characters

Tiptup

as Donatello in Casting Mario and Sonic Characters as Marvel and DC Characters

Tiptup

as Raphael in Casting Mario and Sonic Characters as Marvel and DC Characters

Tiptup

as Leonardo in Casting Mario and Sonic Characters as Marvel and DC Characters

Sonic the Hedgehog (Paramount)

as Kid Flash in Casting Mario and Sonic Characters as Marvel and DC Characters

Dr. Eggman (Dr. Ivo Robotnik)

as Iron Monger in Casting Mario and Sonic Characters as Marvel and DC Characters

Dr. Eggman (Jim Carrey)

as Iron Monger in Casting Mario and Sonic Characters as Marvel and DC Characters

Robo Mario

as Ultron in Casting Mario and Sonic Characters as Marvel and DC Characters

Shadow the Hedgehog

as Red Hood in Casting Mario and Sonic Characters as Marvel and DC Characters

Polterpup

as Scooby-Doo in Casting Mario and Sonic Characters as Marvel and DC Characters

King Kong (1962) Sound Effects

as King Kong in Kong Skull Island (1960)

Godzilla Roars (1962-1975)

as Godzilla in Kong Skull Island (1960)

Arnold Schwarzenegger

as James Conrad in Kong Skull Island (1960)

Michael Clarke Duncan

as Sergeant Packard in Kong Skull Island (1960)