Taisui Xingjun (Fate) Wiki

Alter Ego-class welfare Servant in Fate/Grand Order. A Chinese mythological god said to be the deified form of Tai Sui, a planet that mirrors Jupiter. The Chinese zodiac is based on divisions of Jupiter's orbital cycle rather than the Sun's in the Western zodiac, so Taisui is able to define whether any given year will be lucky or unlucky by using the 12 zodiac signs multiplied by the five Chinese elements (fire, earth, metal, water, and wood), or 60 divisions.

In Fate/Grand Order, he is created by the fusion of countless Con. He usually appears in a child form, only changing to his adult form when using his Noble Phantasm, as he considers himself too dangerous to stay in his adult form as a god of misfortune regularly.

Character Design: Take
Voice Actor (Child): Minami Omi
Voice Actor (Adult): Kawanishi Kengo