He has brothers X-Frisk and X-Azriel. He is the son of X-Gaster. Adopted son of X-Asgor and X-Toriel. Remembers all the time frames that X-Gaster has overwritten using the overwrite button. Disciple X-Undine. He has a purposeful soul. He can use the overwrite and reset button. At the moment when he is very determined, his eyes may turn red. By orientation, he is pansexual. Loves chocolate. Sometimes a joke can be vulgar, and sometimes it's just a joke. Afraid of spiders.