Rufus Caligula

Rufus Caligula is a red Caligula that appears in the story missions concerning Gilbert McLane and Haruomi's past at the Glasglow Branch with Kate, Haruomi's lover. The Rufus Caligula has Kate's God Arc stuck on its back as a result of battle. Rufus Caligula first appeared at the Glasgow Branch and engaged in combat against Gilbert and Kate. It escaped by flight and left Kate's God Arc bracelet damaged in the encounter which led to an infection of her Oracle cells through her body. Gilbert, who was fighting alongside Kate, was forced to kill and devour her body to prevent further incident from occuring (ex: Hannibal case). This incident caused Gilbert to be infamous for the nickname "Flagging Gil" due to killing his superior. When Rufus Caligula reappears near the Far East Branch, the Protagonist (God Eater 2), Gilbert, and Haruomi hunt it down, awakening Gilbert's Power of Blood at the same time.

Additional Information

 * Rufus Caligula has its exclusive battle music titled after itself. This BGM is only used this once in the game's story and is not selectable for Free missions (However, it is selectable in the Archives). No materials can be devoured from Rufus Caligula as it is a story exclusive Aragami.
 * It differs from a normal Caligula only by color.
 * Rufus Caligula and the Person Who Opens the World are the only Story bosses that cannot be rebattled or devoured for materials.