Scalpel is a, small, mad scientist. His size doesn't make a difference to his intelligence or his ferociousness.
Given the chance, he can't resist cutting a victim open and climbing inside to have a look.
Revenge of the FallenEdit
Scalpel made his debut in the Revenge of the Fallen film. He is distributed by Ravage at the sea floor of the Laurentian Abyss and immediately uses a shard of the Allspark to resurrect Megatron. Afterwards, his actions were unknown.
Scalpel later returned to begin an examination on Sam Witwicky. Sam was forced to lie down on an operating table whike Scalpel crawled on him. He stuck a Cybertronian worm-like creature down his throat. After the creature probed out of Sam's nose, he threw it up. The creature allowed Megatron, Starscream and Scalpel himself to view what was in Sam's mind related to the Allspark. Megatron ordered Scalpel to slice Sam's forehead open in order to retrieve his brain - yet a coincidental attack by Optimus Prime and Bumblebee disrupted the session. When Optimus and Bumblebee clashed with Megatron and Starscream, Scalpel's survival was unknown. However, as shown in the Revenge of the Fallen comic adaptation, Scalpel was destroyed by Optimus Prime upon his arrival to the scene.