A character from Fate/stay night. He has red eyes and long blue hair tied into a ponytail. He is often seen wearing form-fitting blue armor and wielding the spear Gae Bolg. Two alternative versions of him also appear in Fate/Grand Order as the Caster and Berserker classes.
True Name: Cu Chulainn
This tag implicates cu_chulainn_(fate)_(all) (learn more).