Reitei

"I am just a phantom of this..."Gray". I am not him! I know that! And yet, I have...I have these repeating flashes, these memories...! Why do they keep coming back?! I don't own them! I don't...My head...Urgh...The man...known as Gray is gone, but his spirit...it persists...! Why...?! What does a wraith have left in this world?!"

- Reitei suffering from Gray's memories emerging Reitei (零帝, Sub-Zero Emperor) is a clone of both Silver Fullbuster, possessing the genetic material of the former, as well as Archive data of Gray Fullbuster, allowing the creation of the "pinnacle of ice magic". Reitei was created by Azazel as an attempt to recreate Silver's power that almost killed him, yet "accidentally" killed Silver, forcing him to take this alternate route. However, due to heavily relying on data archived from Gray for his combat abilities, Reitei began having the former's memories continually force themselves into his mind, making him somewhat unstable and incapable of being properly controlled by Azazel.

Reitei became one of Azazel lesser known experiments, and one of his more recent attempts at creating his prized demon, which in the end, he considers a "passing grade demon". Reitei himself possesses the magic of both of the Fullbuster men, thanks in part to Azazel's own assistance, but also gained additional enhancements to help him become more powerful and much quicker.

Ice Devil Slayer Magic




Trivia

 * "Reitei" references Lyon's initial alias during his introduction during the Galuna Island Arc.