Suggestions by @bendf

Hayden Christensen

as Magog in Justice Society: Kingdom Come

Winston Duke

as Magog in Justice Society: Kingdom Come

Storm Reid

as XS in Justice Society: Kingdom Come

George MacKay

as S.T.R.I.P.E. in Justice Society: Kingdom Come

Tim Allen

as Pat Dugan in Justice Society: Kingdom Come

Tommy Dorfman

as Tigress in Justice Society: Kingdom Come

Issa Rae

as Doctor Midnight in Justice Society: Kingdom Come

Charles Michael Davis

as Hourman in Justice Society: Kingdom Come

Roshon Fegan

as Hourman in Justice Society: All Stars

Roshon Fegan

as Hourman in Justice Society: Revelation

Aubrey Plaza

as Wildcat in Justice Society: Kingdom Come

Madeleine Humphries

as Green Lantern in Justice Society: Kingdom Come

Amanda Seyfried

as Stargirl in Justice Society: Kingdom Come

Niles Fitch

as Kid Flash in The Flash: Reversal of Fortune

Riz Ahmed

as Ramsey Russo in The Flash: Reversal of Fortune

Eduardo Franco

as Cisco Ramon in The Flash: Reversal of Fortune

Richa Moorjani

as Negative Flash in The Flash: Reversal of Fortune

Moses Ingram

as Frost in The Flash: Reversal of Fortune

Lana Condor

as Fast Track II in The Flash: Reversal of Fortune

Wayne Brady

as Joe West in The Flash: Reversal of Fortune