Suggestions by @tempest

Beck Bennett

as Steve Lombard in DCU

Terence Rosemore

as Otis in DCU

Neva Howell

as Martha Kent in DCU

Pruitt Taylor Vince

as Jonathan Kent in DCU

Mikaela Hoover

as Cat Grant in DCU

Adrianne Palicki

as Veronica Cale in DCU

Shazad Latif

as Vandal Savage (Vandar Adg) in DCU

José Julián

as Vibe (Cisco Ramon) in DCU

Maitreyi Ramakrishnan

as Raven (Rachel Roth) in DCU

Avantika

as Raven (Rachel Roth) in DCU

Karen Gillan

as Poison Ivy (Pamela Isley) in DCU

Alan Ritchson

as Captain Atom (Nathaniel Adam) in DCU

David Castañeda

as Bane in DCU

Kit Connor

as Flash (Wally West) in DCU

Lilly Van Der Meer

as Dove (Dawn Granger) in DCU

Anastasia Tsilimpiou

as Donna Troy in DCU

Sebastian Amoruso

as Tempest (Garth) in DCU

Penn Badgley

as Mister Miracle (Scott Free) in DCU

Brandon Flynn

as Midnighter (Lucas Trent) in DCU

Aryan Simhadri

as Beast Boy (Gar Logan) in DCU