Ben Schwartz Leo / Janitor Man (voice) Omar Benson Miller Raph / Office Man 1 (voice) Brandon Mychal Smith Mikey / Foot Soldier 1 (voice) Josh Brener Donnie / Security AI / Tank AI / Dragged Man (voice) Haley Joel Osment Casey Jones / Foot Soldier 3 (voice) Eric Bauza Splinter / Additional Characters (voice) Kat Graham April O'Neil / Café Woman 3 (voice) Jim Pirri Krang One / Military Soldier 1 (voice) Toks Olagundoye Krang Two / Military Woman (voice) Rhys Darby Hypno-Potamus (voice) Rob Paulsen Various Characters (voice) John Michael Higgins Warren Stone (voice) Eugene Byrd Security Guard / Police / Office Man 2 / Café Man (voice) Meghan Falcone Office Woman 1 / Office Woman 2 (voice) Nika Futterman Various Characters (voice) Oliver Vaquer Various Characters (voice)