Keegan-Michael Key

as Mantis Commander (voice)

Chelsea Peretti

as Mistress (voice)

Nick Giovannetti

as Miniature Pitbull (voice)

James Adomian

as Rumplestilscop (voice)

Paul Scheer

as Metal Lord (voice)

Andy Daly

as Mitchell (voice)

Sam Riegel

as Donny (voice)