Suggestions by @dickcooper

Ebon Moss-Bachrach

as Atomic Knight in The Outsiders

Emily Bett Rickards

as Looker in The Outsiders

Will Smith

as Amon in Legend of Korra

Terrence Howard

as Tarrlok in Legend of Korra

Michelle Pfeiffer

as Toph Beifong in Legend of Korra

Ben Affleck

as Hiroshi Sato in Legend of Korra

Anne Hathaway

as Pemma in Legend of Korra

Jack Champion

as Meelo in Legend of Korra

Seth Carr

as Meelo in Legend of Korra

Peyton Elizabeth Lee

as Ikki in Legend of Korra

David Harbour

as Bumi in Legend of Korra

Alex Garfin

as Freedy Freeman in Raven

Naomi Scott

as Harbinger in Raven

Taby

as Mary Bromfield in Raven

Jack Dylan Grazer

as Billy Batson in Raven

Miles Teller

as Superman in Raven

Cameron Gellman

as Nightwing II in Raven

Antony Starr

as Reverse Flash in Raven

Dave Bautista

as Black Adam in Raven

Rhys Ifans

as Nuidis Vulko in Beast Boy