Billy Kid

"The White Chariot" of the Cunning Hares and Former "Red Scarf" of Calydon, Billy Kid is an Intelligent Construct made for combat. Despite having a childish personality and fascination for the TV show Starlight Knight and the idol Monica, Billy is a skilled and powerful fighter, having once been an Outer Ring Champion and being able to outmatch Lighter in a fistfight.

Armed with a pair of revolvers, Billy fights countless threats inside Hollows as part of his job, though he does have a tendency to forget his ammo count.

Found in the Outer Ring's Lost Tech Ruins by a young Appon and his mentor, this Intelligent Tactical Unit (or Battle Android) would roam with these drifters until being sold to the leader of "Calydon," who gave him the role of champion and a name: "Billy Kid." Billy's time as the "Red Scarf" of Calydon made him infamous, with thugs cowering in fear upon hearing his name. He also became close with fellow member Big Daddy and his owner's daughter Caesar King, the latter whom he called "Big Sis." When Calydon's leader vanished and the gang split, Billy would stay with Big Daddy and Caesar, his spare arm being turned into a prosthetic for the latter, who lost her left arm during the chaos.. With his owner gone, Billy was an aimless combat weapon once more. After a discussion with the recently formed Sons of Calydon, they decided to let Billy leave. Prior to his departure, he would form a close bond with Lighter, his successor-to-be. Billy also received two guns from a friend before he left.

With a taste of freedom, Billy ventured to New Eridu, making the city his new home. By some "weird twist of fate," Billy ended up with the Cunning Hares, and in turn became a close ally to the Legendary Proxy Phaethon, assisting them countless times during the story.