A type of TransFormer which has a Nebulan companion (a small humanoid) which transforms into its engine in vehicle mode. This engine is needed to transform between modes, and/or to release other features of the robot.
Powermaster Optimus Prime could only transform out of lorry mode once his Nebulan companion, Hi-Q, was inserted as his engine.
by Andy April 17, 2004
Get the Powermaster mug.