berserker
/bərˈzɜːrkər/
noun
- A person who behaves in a wild, violent, or uncontrollable way, especially in a fight or battle.
- The legend tells of a berserker who could not be stopped by any weapon.
- He turned into a berserker on the soccer field, tackling everyone in his path.
- In the movie, the berserker warrior fought with incredible strength and no fear.