Mojo’s and Frankie’s hero dog collars from Transformers: Revenge of the Fallen. (Paramount, 2009) One pair of leather and one pair of jewel-studded collars for both Mojo; the Chihuahua, and Frankie; the French Bulldog – both the Witwicky’s pets. Along with a Hollywood History COA these will also come with a COA from Michael Bay from Bay Films/Paramount Pictures the director of the film.