The script for Transformers Revenge Of The Fallen is credited to Ehren Kruger, Roberto Orci and Alex Kurtzman, based on Hasbro's Transformers action figures, but the Fallen was actually created by British comic writer Simon Furman for Transformers: War Within The Dark Ages issue one published by Dreamwave in 2003.
Does he get a credit on the movie? A thank you? Does he heck. That's Hollywood for you.