XGaster is a major character in XTale and Underverse. He is the sole creator of the XTale universe. XGaster had lost complete motivation towards creating a perfect world, but after his visit by Ink!Sans, XGaster invests more time to creating "the perfect story" for his universe. This motivation causes tensions, not just within his own universe, but to many others soon afterwards. Not much about XGaster's origin is known. When the XTale first formed in the Doodle Sphere, he, alongside a Frisk and Chara, came into existence alongside it. At this point in time, he already had his unique SOUL, and did not have a name yet. Despite likely not being biologically related, he considered the two children he came into existence with his own. XGasters ideology is “Evolution Requires Sacrifice” He is also considered a perfectionist.(If you type things the way that they happened then you will get some dialogue)

His real name is Fairy King Harlequin and he is the protector of the Fairy King's Forest and the Fairy Realm. His Sacred Treasure is the Spirit Spear Chastiefol, which he uses in conjunction with his inherent power, Disaster. He is apart of the 7 Deadly Sins which is a group that consists of Meliodas and he’s the captain which means he’s the strongest. Ban and he is immortal because he drank the fountain of youth. Diane is one of the giant race and King has a crush on her. Merlin is a powerful mage which is basically a witch. Gowther is a doll and a long time ago he lost his heart so therefore he can’t feel emotions. Escanor in the night he is a weak human but when it becomes day he becomes very buff and has the power of the sun.(sorry abt the picture) This takes place when King and Ban saw each other. King also has a sister named Elaine and King thinks Ban killed her and now King wants revenge. (Srry about picture)