Todd Carmack

Dr. Todd Carmack was the chief scientist of the UAC Olduvai Research Facility who appears in the 2005 film Doom.

History
Dr. Carmack discovered skeletal remains on Mars that contain a 24th chromosome (dubbed C24), making the creatures superhuman, invulnerable to disease and with the ability to rapidly heal injuries. Carmack experimented with C24 and deliberately injected the chromosome into several convicted prisoners. This became Carmack's own undoing as one of the prisoners, multiple murderer Curtis Stahl, mutated and broke free, and began to kill Carmack's colleagues and causing an outbreak of mutated monsters. Carmack managed to transmit a warning before he was attacked by Stahl.

Carmack was later found alive by the Rapid Response Tactical Squad. The doctor was deranged to the point of tearing off his own ear before he was restrained and taken to Dr. Samantha Grimm's laboratory. However, Carmack was revealed to be infected by C24 and mutated into an Imp and attacked Duke and Samantha. However, Duke lured Carmack to become entrapped in the laboratory's nanowall. The mutated Carmack was eventually executed by Sarge.

Trivia

 * His last named is a reference to Doom series creator John Carmack.