What is he, a dragon? A lizard? Something. He's a recolor of a Starriors vehicle of the same name (sans hyphenation). You insert the robot pilot by removing the pilot's legs and planting his torso into a slot in the beast's back. Honest. Twin-Horn's legs rock back and forth when you roll him, a slither-walk if you will. Plus there's the now-familiar lever that makes his tongue extend. You really can't go wrong with that gimmick.