Oliver, Kaz, and Skylar find out who Mr. Terror is. Meanwhile, we find out where the Arcturion came from: Philip's planet.

Cast: Bradley Steven Perry, Jake Short, Paris Berelc, Devan Leos, Jeffrey James Lippold, David Mattey, Mike Beaver, Morgan Benoit, Rachel Brann, Jamie Denbo, Richard Epcar, Demetris Hartman, Jeremy Howard, Augie Isaac, Carlos Lacamara