Episode is a young vampire hunter who wields a giant cross as a weapon. He stole Shinobu's left leg.

He is a half-vampire.

During the events of Nekomonogatari: White, it is revealed that he is actually very young, only age 6, soon to be 7, but the parent on his vampire side was known for maturing quickly, a trait he retains.

Hanekawa comments he looks about as old as a highschooler.