Orci & Kurtzman reveal Transformers: Revenge of the Fallen details | SCI FI Wire The interview covers some old ground like how Bob and Alex weren't sure about returning to the sequel initially, the 'being away from home' theme, Nimoy and Welker being approached for voices, but it does give an insight into how many of the robots are essentially Stormtroopers: it's just they have to have their own designs and toy names. To them, Demolishor is Wheelbot and Jolt is Volt. The characters they definitely had in the film's treatment before the strike were the Fallen (whom they selected because he was the most 'elemental' villain); Jetfire; Megs; Soundwave; the Constructions; and Arcee. The Twins were 'in-betweeners'. EDIT: Oh, and they're not sure whether to explain robot gender or not.