Billy Kid

Billy is a member of the Sly Hares
Cunning Hares is a recruitment agency and faction in Zenless Zone Zero. Officially, the agency is called "Gentle House", but Nicole prefers the nickname "Cunning Hares" to the original one.
Gentle House; or better known as Cunning Hares, is classified as a small recruitment agency, but is more accurately a one-time job company that focuses on Hollow commissions. Cunning Hares became infamous on the commission scene due to their high fees, receiving bad reviews, and financial problems. Cunning Hares was founded by wise Nicole Demaroy, who works with her colleagues, Anby Demara and Billy the Kid on commission; will join them later Nekomiya Mana . Cunning Hares are also regular customers of the famous Legendary Proxy Phaeton

This handsome cyborg with a cool and carefree personality is a passionate fan of the Star Knight show, not only calling himself one of the Star Knights, but also repeating many classic lines from the show.
He may look unreliable, but when he gets serious, Billy can take on any challenge...
he seems carefree, but his strength can be relied upon..
Billy the Kid, an artificial intelligence that has passed the forbidden fruit test, is essentially a self-aware machine.
True to his name, despite the robot's appearance, he looks quite like a child.
He is a big fan of the visual FX show "Star Knight" and wants to be a hero like the main characters of the show. He often calls himself the Knight of Starlight and mimics the lines from the series.
However, this behavior seems to be intended only for comedic effect.
"Don't make me look like an idiot! Obviously, I'm very smart!" — Billy.