Seven Servants and three Pseudo-Servants appear in the animated special Fate/Grand Order x Himuro's World: Seven Most Powerful Great Figures Chapter. Aside from the Pseudo-Servants, they are almost all from the Fate/school life Servant creation contest.
Saber
Saber (セイバー, Seibā?) is the Saber-class Servant of Kane Himuro. Her True Name is Lê LợiWP (黎利?).
Archer
Archer (アーチャー, Āchā?) is the Archer-class Servant of Ayako Mitsuzuri. His True Name is Mehmed IIWP (メフメト2世, Mefumeto 2-sei?). There is another rendition of Mehmed II in Fate/Apocrypha.
Lancer
Lancer (ランサー, Ransā?) is the Lancer-class Servant of Issei Ryuudou. Her True Name is Lucky Mother (ラッキー・マザー?), the Mitochondrial EveWP (ミトコンドリア・イヴ, Mitokondoria Ibu?).
Rider
Rider (ライダー, Raidā?) the Rider-class Servant of Kaede Makidera. His True Name is DiogenesWP (ディオゲネス?).
Caster
Caster (キャスター, Kyasutā?) is the Caster-class Servant of Saeki Naomi. Her True Name is Leo IIIWP (レオ3世?).
Berserker
Berserker (バーサーカー, Bāsākā?) the Berserker-class Servant of Gai Gotou. His True Name is Nevil ShuteWP (ネビル・シュート?). He is killed by Saber.
Grappler
Grappler (グラップラー?) is the Grappler-class Servant of Yukika Saegusa. His True Name is PlatoWP (プラトン?).
Pseudo-Servants
Assassin (Kaede Makidera)
Assassin (アサシン, Asashin?) is an Assassin-class Pseudo-Servant inhabiting the body of Kaede Makidera. Her True Name is Takuboku IshikawaWP (石川啄木?).
Caster (Kane Himuro)
Caster (キャスター, Kyasutā?) is a Caster-class Pseudo-Servant inhabiting the body of Kane Himuro. Her True Name is Amelia Jenks BloomerWP (アメリア・ジュンクス・ブルーマー?).
Unknown (Yukika)
Yukika Saegusa appears as a Pseudo-Servant as well, but her hero and class are unknown.
References