Supergirl/Kara
Meg Donnelly
Batman
Jensen Ackles
Brainaic 5
Harry Shum Jr.
The Flash
Matt Bomer
Superman
Darren Criss
Phantom Girl (voice)
Gideon Adlon
Alura
Jennifer Hale
Mon El
Yuri Lowenthal
TimberWolf / Brainiac 4 (voice)
Robbie Daymond
Brainiac / Solomon Grundy (voice)
Darin De Paul
Arms Fall Off Boy / Brainiac 2 (voice)
Ben Diskin
Shadow Lass (voice)
Victoria Grace
Dawnstar (voice)
Cynthia Hamidi
Bouncing Boy (voice)
Ely Henry
Triplicate Girl (voice)
Daisy Lightfoot
Cosmic Boy / Chemical King (voice)
Eric Lopez
Invisible Kid / Brainiac 3 (voice)
Zeno Robinson