Suggestions by @cartoonmultiverse

Phil LaMarr

as John Stewart/Green Lantern in Justice League: The Age of Darkseid

Drake Bell

as Jimmy Olsen in Justice League: The Age of Darkseid

Bryce Papenbrook

as Cisco Ramon in Justice League: The Age of Darkseid

Rebecca Shoichet

as Carol Ferris in Justice League: The Age of Darkseid

Karen Fukuhara

as Iris West in Justice League: The Age of Darkseid

Dave Fennoy

as J’onn J’onzz/Martian Manhunter in Justice League: The Age of Darkseid

Ashleigh Ball

as Zatanna in Justice League: The Age of Darkseid

Ralph Fiennes

as Alfred Pennyworth in Justice League: The Age of Darkseid

Jack De Sena

as Barry Allen/The Flash in Justice League: The Age of Darkseid

Josh Keaton

as Hal Jordon/Green Lantern in Justice League: The Age of Darkseid

Tara Strong

as Diana Prince/Wonder Woman in Justice League: The Age of Darkseid

Yuri Lowenthal

as Clark Kent/Superman in Justice League: The Age of Darkseid

Roger Craig Smith

as Bruce Wayne/Batman in Justice League: The Age of Darkseid

Josh Keaton

as Hal Jordon/Green Lantern in The Trinity

Steven Yeun

as Barry Allen/The Flash in The Trinity

Kari Wahlgren

as Sue Dibny/Nee Dearbon (Flashback/Vision/died) in The Trinity

Steve Blum

as Ralph Dibny/Elongated Man in The Trinity

Mark Oliver

as Arthur Light/Doctor Light in The Trinity

Tabitha St. Germain

as Big Barda in The Trinity

Mae Whitman

as Barbara Gordon/Batgirl in The Trinity