Suggestions by @robertwaynecarroll

Fox Messitt

as Bryan Brown Macready in Hit-Girl

Yahya Abdul-Mateen II

as Black Manta (David Hyde) (Opening Scene Cameo) in The Flash

Scoot McNairy

as Metallo (Wallace Keefe) (Opening Scene Cameo) in The Flash

Sylvester Stallone

as Wild Cat (Theodore Grant) (Flashpoint Earth) in The Flash

Sylvester Stallone

as King Shark (Nanaue) (Flashpoint Earth) in The Flash

Will Smith

as Black Lighting (Jefferson Pierce) (Flashpoint Earth) in The Flash

Patrick Wilson

as Ocean Master (Orm Marius) (Opening Scene Cameo) in The Flash

Spider-Man/Miles Morales (Insomniac)

as Spider-Man PS4 (Miles Morales) in GAME HOUSE

Princess Peach Toadstool

as Princess Peach in GAME HOUSE

Phoenix Wright

as Phoenix Wright in GAME HOUSE

Nicolas Cage

as Superman (Clark Kent) (Kal-El) (Cameo) (Clooneyverse) in The Flash

Marlon Wayans

as Nightwing (Dick Grayson) (Cameo) (Burtonverse) in The Flash

Sean Gunn

as Weasel (Flashpoint Earth) in The Flash

Amy Adams

as Lois Lane (Flashpoint Earth) in The Flash

Joe Manganiello

as Deathstroke (Slade Wilson) (Flashpoint Earth) in The Flash

Dan Stevens

as John Constantine (Flashpoint Earth) in The Flash

John Cena

as Peacemaker (Christopher Smith) (Flashpoint Earth) in The Flash

Jurnee Smollett

as Green Canary (Dinah Lance) (Flashpoint Earth) in The Flash

Kevin Michael Richardson

as Goro (DLC) in Mortal Kombat vs DC Universe 2

Steve Blum

as John Constantine (DLC) in Mortal Kombat vs DC Universe 2