Xavier

Xavier (ザビエル), often referred to as X (エックス), is one of the two protagonists of XYZ. This is the original depiction of Xavier, as created by Alex Guy.

He appears prominently in Stardust Requiem and makes a posthumous cameo in Final Endings. He and Yvette are the eighth central characters in the Evershade series.

Xavier is introduced as one of the EXL Corporation's top agents, who is assigned to a mission with Yvette. This happened to involve the Seven Deadly Sins and their plan to awakening the titanic trio, X, Y, and Z, and using their power for their own malicious deeds, but Xavier and Yvette were challenged by Zane.

Grand Tour and XYZ (2027)
It is mentioned that two figures successfully evaded Helix agents arriving on the scene. This sighting was brought up by Russell Johnson during a meeting, where it was believed that the two were agents for a secret organization and had a connection with the appearance of mythical creatures. This was later proven correct.

Final Endings
By 2108, Xavier and the rest of the previous protagonists have died of natural causes. Both Xavier and Yvette appear in an old newspaper inside a storage room during an attack by Team Neo.