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Meg Donnelly

Supergirl / Kara (voice)

Harry Shum Jr.

Brainiac 5 (voice)

Jensen Ackles

Batman (voice)

Gideon Adlon

Phantom Girl (voice)

Matt Bomer

The Flash (voice)

Darren Criss

Superman (voice)

Robbie Daymond

TimberWolf / Brainiac 4 (voice)

Darin De Paul

Brainiac / Solomon Grundy (voice)

Ben Diskin

Arms Fall Off Boy / Brainiac 2 (voice)

Victoria Grace

Shadow Lass (voice)

Jennifer Hale

Alura (voice)

Cynthia Hamidi

Dawnstar (voice)