Red Fel participates in the Holy Grail War of Anchorage as the master of Berserker.
The Servants participating in this war are:
- Saber: King Arthur (Prototype)
- Archer: Tristan
- Lancer: Li Shuwen
- Rider: Saint Martha
- Caster: Nitocris
- Assassin: Osakabe-hime
- Berserker: Night of Wallachia
- Extra class: None
So, I don't know how familiar you are with TATARI here, but he's basically a living Reality Marble, a living curse. He's a literal urban legend, powered by rumor and fear, and manifests as whatever people expect him to be. In other words, since combatants in a Grail War anticipate fearsome opponents, he will become that. And since his desire is to become the
worst possible thing in an area, he will cultivate the rumors and fear to
make himself that. You know those
Grudge movies? He's that, but
smarter.
And that's my Servant. I think I win.