Suggestions by @darkstorm

CCH Pounder

as Amanda Waller in Justice League x Avengers: the Animated Movie

Tara Strong

as Harley Quinn in Justice League x Avengers: the Animated Movie

Mark Hamill

as Joker in Justice League x Avengers: the Animated Movie

Khary Payton

as Black Manta in Justice League x Avengers: the Animated Movie

Yuri Lowenthal

as Tempest in Justice League x Avengers: the Animated Movie

Khary Payton

as Aqualad in Justice League x Avengers: the Animated Movie

Fred Tatasciore

as Deathstroke in Justice League x Avengers: the Animated Movie

Chi McBride

as Nick Fury in Justice League x Avengers: the Animated Movie

Benjamin Diskin

as Venom in Justice League x Avengers: the Animated Movie

Crispin Freeman

as Arsenal in Justice League x Avengers: the Animated Movie

Jason Spisak

as Flash II in Justice League x Avengers: the Animated Movie

Jesse McCartney

as Nightwing in Justice League x Avengers: the Animated Movie

Keith David

as Mongul in Justice League x Avengers: the Animated Movie

Tony Todd

as Darkseid in Justice League x Avengers: the Animated Movie

Giancarlo Esposito

as Gorilla Grodd in Justice League x Avengers: the Animated Movie

Charlie Adler

as M.O.D.O.K. in Justice League x Avengers: the Animated Movie

Troy Baker

as Loki in Justice League x Avengers: the Animated Movie

Liam O'Brien

as Red Skull in Justice League x Avengers: the Animated Movie

Clancy Brown

as Lex Luthor in Justice League x Avengers: the Animated Movie

Matt Ryan

as John Constantine in Justice League x Avengers: the Animated Movie