Sarge

The Sarge was the main antagonist of the movie Doom

Before Mutation
Before his mutation,he was the sergeant of the RRTS that would search the UAC,Sarge was very arrogant,and believed that only him could stop the monsters,Sarge killed the The Kid,because he was very good,and he believed that he was not necessary in the mission.

After Mutation
Sarge was grabed by one of the monsters and transformed into a monster,in the moment that The Reaper encountered him,he was not already turned,but his sanity was gone,after Sarge shoots Reaper with the BFG he was completely turned into a monster,now he was with a Superhuman strenght and a great speed,Sarge was killed by Reaper by a Grenade