Suggestions by @KingGameRuler

Clancy Brown

as Lex Luthor in My DC Universe: Villains

Amber Lee Connors

as Cassandra Cain in My DC Universe: Teen Titans/Young Justice

Mae Whitman

as Stephanie Brown in My DC Universe: Teen Titans/Young Justice

Mary Elizabeth McGlynn

as Rose Wilson in My DC Universe: Teen Titans/Young Justice

Kari Wahlgren

as Cassandra "Cassie" Sandsmark in My DC Universe: Teen Titans/Young Justice

Ashley Johnson

as Terra Markov in My DC Universe: Teen Titans/Young Justice

Jason Marsden

as Bart Allen in My DC Universe: Teen Titans/Young Justice

Diamond White

as Karen Beecher in My DC Universe: Teen Titans/Young Justice

Stephanie Lemelin

as Artemis Crock in My DC Universe: Teen Titans/Young Justice

Phil LaMarr

as Virgil Hawkins in My DC Universe: Teen Titans/Young Justice

Khary Payton

as Kaldur'ahm/Jackson Hyde in My DC Universe: Teen Titans/Young Justice

Danica McKellar

as M'gann M'orzz/Megan Morse in My DC Universe: Teen Titans/Young Justice

Jenna Ortega

as Rachel Roth in My DC Universe: Teen Titans/Young Justice

Khary Payton

as Victor Stone in My DC Universe: Teen Titans/Young Justice

Shamon Brown Jr.

as Garfield Logan in My DC Universe: Teen Titans/Young Justice

Grey DeListle-Griffin

as Donna Troy in My DC Universe: Teen Titans/Young Justice

Wil Wheaton

as Garth in My DC Universe: Teen Titans/Young Justice

Crispin Freeman

as Roy Harper in My DC Universe: Teen Titans/Young Justice

Erika Harlacher

as Koriand'r in My DC Universe: Teen Titans/Young Justice

Jason Spisak

as Wally West in My DC Universe: Teen Titans/Young Justice