Scalpel is the name of two fictional characters from the Transformers series. The original Scalpel was one of the villains in the 2009 film Transformers: Revenge of the Fallen. The second was a homage to the original for the Transformers Animated story.
Transformers: Revenge of the Fallen
Scalpel is a small, crab-like robot who turns into a microscope and speaks in an east European German accent. He is a medic and scientist equipped with tools he is seen using to torture Sam. The other Decepticons call him "the Doctor".  The packaging of his Scout-Class figure details he is skilled in dissecting and rebuilding almost any living organism - organic or technological. 
Scalpel appears in Revenge of the Fallen with Ravage, Long Haul, Mixmaster, Rampage and Scrapmetal when they retrieve Megatron's body. He helps in repairing and reanimating Megatron with the use of an Allspark fragment and parts from Scrapmetal, whose death he orders to provide the parts he needs to finish the repairs. He later is used to torture Sam Witwicky when Sam is rescued. However, while the novel and comic books show that he is destroyed by Prime, the movie leaves his fate unclear, as he suddenly disappears after Prime intrudes and begins battling Starscream and Megatron.
- Revenge of the Fallen Scout Scalpel (2009)
- Timelines Cybertron's Most Wanted (2015)
The second Scalpel is a member of Strika's Team Charr. Is is an Animated style remake of the Revenge of the Fallen character. Scalpel and Oil Slick created Toxitron according to his Tech Spec.
After the events of Transformers Animated the Stunticons set up a Stunt Convoy show in the city of Kaon and used it as cover to attempt to break Megatron out of his detention at Trypticon. Their efforts were thwarted thanks to the efforts of Cheetor, Optimus Prime and Sideswipe. The Stunticons were placed in detention with Megatron and an attempt to rescue them was made by the Decepticons Blot, Mindwipe, Oil Slick, Scalpel, Sky-Byte and Strika.
- http://www.usatoday.com/life/movies/news/2009-04-01-transformers-first-look_N.htm First look: Robo-brawlers big, small in new 'Transformers' By Anthony Breznican, USA TODAY
- "In Package Images Of Transformers: Revenge Of The Fallen Dune Runner and Scalpel". TFW2005. 2009-04-02. http://www.tfw2005.com/transformers-news/transformers-movie-toys--products-30/in-package-images-of-transformers-revenge-of-the-fallen-dune-runner-and-scalpel-167208/. Retrieved 2009-04-02.
- Marty Isenberg, Derrick J. Wyatt & Matt Youngberg (w), Marcelo Matere (p), Marcelo Matere (i), Thomas Deer & Jesse Wittenrich (col), Jesse Wittenrich (let), Pete Sinclair & Brian Savage (ed). ""The Stunt-Con Job"" Transformers: Timelines v2, 6 (Summer 2011), Fun Publications