Xane is a Naiad.
He presents a constant and dangerous challenge during the quest for Muramasa, and wields a blue dagger in one hand an a shorter red dagger in the other. He is infamous for the many times he has stabbed someone with his dagger, though the only person killed during the comic (so far) is the alleged killing of Tyrone, since he left anchovies off the pizza. Xane is described by June as one part crazy and two parts insane.
As quoted by Jesse himself:
"his oddly funny and charming side, and his straight-up-will-shank-you-with-a-magical-dagger side"