Suggestions by @super_wahrrior

Robbie Coltrane

as Tweedledum and Tweedledee in Marvel and DC Connected Animated Extended Universe

Ariana Grande

as March Harriet in Marvel and DC Connected Animated Extended Universe

Samuel L. Jackson

as Incubus in Marvel and DC Connected Animated Extended Universe

Alain Chanoine

as Incubus in Marvel and DC Connected Animated Extended Universe

Cara Delevingne

as Enchantress in Marvel and DC Connected Animated Extended Universe

Sophia Di Martino

as Sylvie in Marvel and DC Connected Animated Extended Universe

Johnny Depp

as Mad Hatter in Marvel and DC Connected Animated Extended Universe

Jon Hamm

as Iron Man in Marvel and DC Connected Animated Extended Universe

Robert Downey Jr.

as Iron Man in Marvel and DC Connected Animated Extended Universe

Johnny Depp

as Iron Man in Marvel and DC Connected Animated Extended Universe

Jim Gaffigan

as Red Guardian in Marvel and DC Connected Animated Extended Universe

David Harbour

as Red Guardian in Marvel and DC Connected Animated Extended Universe

Scarlett Johansson

as Black Widow in Marvel and DC Connected Animated Extended Universe

David Hasselhoff

as Nick Fury in Marvel and DC Connected Animated Extended Universe

Samuel L. Jackson

as Nick Fury in Marvel and DC Connected Animated Extended Universe

Will Smith

as Nick Fury in Marvel and DC Connected Animated Extended Universe

David Hasselhoff

as Aquaman in Marvel and DC Connected Animated Extended Universe

Kevin Michael Richardson

as Black Manta in Marvel and DC Connected Animated Extended Universe

Yahya Abdul-Mateen II

as Black Manta in Marvel and DC Connected Animated Extended Universe

Ayelet Zurer

as Lara in Marvel and DC Connected Animated Extended Universe