Ganesha

Ganesha, Class Name MoonCancer, is a MoonCancer-class Servant summoned by Ritsuka Fujimaru in the Lostbelts of Fate/Grand Order.

The Servant's actual True Name is Jinako Carigiri , initially called Giant Statue God during her first ascension. This name displayed on the profile in Chaldea's database is that of Jinako, the human host, but the data is "conceptually corrupted in a way no one can read the name."

She is a Pseudo-Servant imbued with the Divine Spirit Ganesha, the Remover of Obstacles and the Hindu God of Beginnings, Success and Wisdom; being a son of Shiva and Parvati.

Ganesha forcibly fused with Jinako, altering her Saint Graph on conceptual level to fuse with her with only reason being that they are compatible. And due to this, everyone will refer to her as Ganesha and no one will recognize her, even by her previous servant Karna.