REVENGE OF THE FALLEN
Scrapper is a Constructicon that fought in Egypt with the other decepticons in the film Revenge of the Fallen.
Scrapper and the Constructicons are hidden on a boat at Deep Six, waiting to revive their fallen leader, Megatron. Scrapper is later killed in Egypt by a human air strike force. In toyline in comics he forms with his fellow Cons to form Devastator's right arm.
DARK OF THE MOON
There is another Scrapper (Scrap Junkie) in Transformers 3, but he is easily killed by Optimus Prime before attacking Shockwave.