>>10365269(Main) robot mode - like Earthrise Scorponok, he's a Headmaster in a Headmaster, and thus technically has two robot modes - the big robot here (which is one massive transtector), and the second transtector that makes up the big robot mode's head; the actual Zarak is the head of the smaller robot, and can either attach in head mode to the bigger head to make up the neck, or ride in the big robot's chest in either mode (since the big head can attach with or without Zarak actually plugged into it).