Suggestions by @marvelfanboy

White Labrador

as Krypto in Justice League

Annette Bening

as Martha Kent in Justice League

Bruce Greenwood

as Jonathan Kent in Justice League

Bruce Campbell

as Perry White in Justice League

Fionn Whitehead

as Jimmy Olsen in Justice League

Anne Hathaway

as Lois Lane in Justice League

Dobermann

as Ace in Justice League

Bryan Cranston

as Jim Gordon in Justice League

Timothée Chalamet

as Robin in Justice League

Charles Dance

as Alfred Pennyworth in Justice League

Eli Goree

as Cyborg in Justice League

Jake McDorman

as The Flash in Justice League

Jensen Ackles

as Green Lantern in Justice League

Travis Van Winkle

as Aquaman in Justice League

Bridget Regan

as Wonder Woman in Justice League

Henry Cavill

as Superman in Justice League

Jon Hamm

as Batman in Justice League

Ray Liotta

as Tony Zucco in Batman: Fear Itself

Robert Alonzo

as Choreographer in Batman: Fear Itself

Michael Giacchino

as Composer in Batman: Fear Itself