The complete main cast and crew rundown for the Legion of Super-Heroes animated feature, as listed in the official credits for the DC Universe Movie title, are as follows below.
Warner Bros. Animation presents
Legion of Super-Heroes
Meg Donnelly – Supergirl/Kara
Harry Shum Jr. – Brianiac 5
Jensen Ackles – Batman
Gideon Adlon – Phantom Girl
Matt Bomer – The Flash
Darren Criss – Superman
Robbie Daymond – Timberwolf, Brainiac 4
Darin DePaul – Brainiac, Solomon Grundy
Ben Diskin – Arms Fall Off Boy, Brainiac 2
Victoria Grace – Shadow Lass
Jennifer Hale – Alura
Cynthia Hamidi – Dawnstar
Ely Henry – Bouncing Boy
Daisy Lightfoot – Triplicate Girl
Eric Lopez – Cosmic Boy, Chemical King
Yuri Lowenthal – Mon El
Zeno Robinson – Invisible Kid, Brainiac 3
Directed by Jeff Wamester
Written by Josie Campbell
Based on Characters from DC
Producer – Jim Krieg
Producer – Kimberly S. Moreau
Line Producer – Angela O’Sullivan
Supervising Producer – Butch Lukic
Executive Producer – Sam Register
Music by Kevin Riepl
Editor – Bruce A. King
Casting and Voice Direction – Wes Gleason
Animation Services – The Answer Studio
Character Design Supervisor – Jon Suzuki
Character Design – Dusty Abell, Tina Duong, Otto Schmidt
Storyboard Artists – Aluir Almancio, Ben Li, Jessic Cuffe, Elsa Garagarza, Kaela Lash, Seungkyu Lee, David Maximo, Ifesinachi Orijekwe, Chris Palmer, J. Andres Velasco, DJ Zutkovic