Suggestions by @mephilesthedark

Thanos (Marvel)

as Goku in If This Villain Was A Member Of _____’s Rogues Gallery

Milly Alcock

as Supergirl in The Perfect Justice League movie

Will Poulter

as Booster Gold in The Perfect Justice League movie

Ryan Hansen

as Booster Gold in The Perfect Justice League movie

Aldis Hodge

as Martian Manhunter in The Perfect Justice League movie

Sterling K. Brown

as Martian Manhunter in The Perfect Justice League movie

Chiwetel Ejiofor

as Martian Manhunter in The Perfect Justice League movie

Mahershala Ali

as Martian Manhunter in The Perfect Justice League movie

Kyle Chandler

as Green Lantern in The Perfect Justice League movie

Will Poulter

as Aquaman in The Perfect Justice League movie

Melissa Barrera

as Wonder Woman in The Perfect Justice League movie

Brandon Sklenar

as Batman in The Perfect Justice League movie

Melissa Barrera

as Wonder Woman in DC's Powerpuff Girls

Brandon Sklenar

as Batman in DC's Powerpuff Girls

Emperor Belos

as Moon Knight in If This Villain Was A Member Of _____’s Rogues Gallery

Sheldon J. Plankton

as Iron Man in If This Villain Was A Member Of _____’s Rogues Gallery

Odalia Blight

as Iron Man in If This Villain Was A Member Of _____’s Rogues Gallery

Magneto (Max Eisenhardt/Erik Lehnsherr)

as Team Avatar in If This Villain Was A Member Of _____’s Rogues Gallery

Lord Shen

as Team Avatar in If This Villain Was A Member Of _____’s Rogues Gallery

Azula

as Luz Noceda in If This Villain Was A Member Of _____’s Rogues Gallery