Ben Schwartz

as Leo / Janitor Man (voice)

Omar Benson Miller

as Raph / Office Man 1 (voice)

Brandon Mychal Smith

as Mikey / Foot Soldier 1 (voice)

Josh Brener

as Donnie / Security AI / Tank AI / Dragged Man (voice)

Haley Joel Osment

as Casey Jones / Foot Soldier 3 (voice)

Eric Bauza

as Splinter / Additional Characters (voice)

Kat Graham

as April O'Neil / Café Woman 3 (voice)

Jim Pirri

as Krang One / Military Soldier 1 (voice)

Toks Olagundoye

as Krang Two / Military Woman (voice)

Rhys Darby

as Hypno-Potamus (voice)

Rob Paulsen

as Various Characters (voice)

John Michael Higgins

as Warren Stone (voice)

Eugene Byrd

as Security Guard / Police / Office Man 2 / Café Man (voice)

Meghan Falcone

as Office Woman 1 / Office Woman 2 (voice)

Nika Futterman

as Various Characters (voice)

Oliver Vaquer

as Various Characters (voice)