Alter Ego (アルターエゴ, Arutā Ego?) is a Counter Guardian appearing in the Imperial Capital Holy Grail Strange Story of Fate/KOHA-ACE. She is also an Alter Ego-class Servant able to be summoned by Ritsuka Fujimaru in the Grand Orders of Fate/Grand Order. There is also a parody form known as Devil Saber.
Alter Ego's True Name is Okita Souji (Alter) (沖田総司 〔オルタ〕, Okita Sōji (Oruta)?), also known as Devil Okita Souji Alternative (魔神・沖田総司・オルタナティブ, Majin Okita Sōji Orutanatibu?) and Okita Alter (沖田オルタ?). She is a Counter Guardian formed through Sakura Saber's spiritual foundation taking in a Holy Grail filled with Seven Servants and being supported by the Counter Force.
She appears as a young teenage girl with long white hair, tied back at either side with red tassels. She wears a red and black dress bearing similarity to a short kimono and long European style coat, complete with high collar held closed by a rope tassel. She appears to wear long stockings.
She is more emotionless than normal due to her support from the Counter Force, but her roots as Okita remain the same. She takes on a "hitman attitude that will kill anything."
In terms of her likes and dislikes, she has stated in her My Room Lines that she enjoys Oden, even to a point where she would hesitate to destroy the Holy Grail after she found out she could wish for Oden during the summer. When asked about her dislikes, the only thing that came to her mind was when she participated in a raffle and didn’t win anything. She stated that “drawing nothing but blanks was really mortifying in reality”. Both of these likes and dislikes could be related to her parody version, Devil Saber (Parody)’s likes and dislikes as both enjoy Oden. Devil Saber (Parody)’s dislike is “When no Rares drop after rolling 10 Gachas”. This can be related to Okita Alter’s dislike toward drawing blanks, even in terms of store lotteries.
Okita Alter also cares deeply for her master for “granting her a life that should have never been possible”. She has expressed her gratitude multiple times in the My Room Lines for everything her master has given her. But besides these three things, and a wish to wear clothes like Berserker Nobu, she holds most other things and people at a rather neutral opinion.
As Sakura Saber, Demon Archer, and Lancer face Caster and the Neo Fuhrer, they find themselves unable to defeat it. Archer kills Lancer, tells Saber to use the Grail, and then dies herself. Saber takes the Grail into herself and becomes Devil Saber. She then defeats Caster and the Neo Fuhrer. Okita returns to normal after and brings a small Archer back with her.
GUDAGUDA Far East Devil Battlefront 1945Edit
Devil Saber possesses twelve special moves.
- Decisive Blade - Endless Three-Stage (絶剱・無穹三段?), a move firing "infinite light" that defeats Maxwell's Demon and the Neo Fuhrer, blowing away its very concept. In the context of Fate/Grand Order, it is considered her Noble Phantasm.
- Purgatory Sword (煉獄剣?), "a cool black katana."
- Furthest Earth (極地?), "a mysterious dimension maneuver."