Berserker (Fate/KOHA-ACE)

Berserker (バーサーカー) is the Berserker-class Servant of the Strange Tales of the Imperial Holy Grail of Fate/KOHA-ACE.

Identity
Berserker's identity is Demon Musashi (鬼武蔵), summoned instead of Shinji's intended Heroic Spirit,.

Fate/KOHA-ACE
After being summoned, Berserker goes to storm Demon Archer's compound, cutting off Shini's arm in the process and then carrying him while slaughtering guards.