Suggestions by @christopherrowe

Dwayne Johnson

as Aquaman in Justice League: World's Greatest Heroes

Jensen Ackles

as Hawkman in Justice League: World's Greatest Heroes

Vin Diesel

as Kilowag in Justice League: World's Greatest Heroes

Chris Hemsworth

as Steve Trevor in Justice League: World's Greatest Heroes

Danai Gurira

as Amanda Waller in Justice League: World's Greatest Heroes

J.K. Simmons

as Perry White in Justice League: World's Greatest Heroes

Finn Wolfhard

as Wally West in Justice League: World's Greatest Heroes

Karen Gillan

as Iris West in Justice League: World's Greatest Heroes

Jeff Bridges

as Commissioner Jim Gordon in Justice League: World's Greatest Heroes

Brie Larson

as Supergirl in Justice League: World's Greatest Heroes

Millie Bobby Brown

as Supergirl in Justice League: World's Greatest Heroes

Ian McKellen

as Alfred Pennyworth in Justice League: World's Greatest Heroes

Kaley Cuoco

as Lois Lane in Justice League: World's Greatest Heroes

Bill Hader

as Brainiac in Justice League: World's Greatest Heroes

Nicholas Hoult

as Superman in Justice League: World's Greatest Heroes

Hugh Jackman

as Batman in Justice League: World's Greatest Heroes

Thomas Brodie-Sangster

as Link in Super Smash Bros.

Josh Gad

as Mario in Super Smash Bros.

Brie Larson

as Samus in Super Smash Bros.