She is named after the "00 buck" shotgun load. Chiester 00 wears a black uniform and has long blonde hair. She has an eyepatch over her left eye, and her left bunny-ear has a scar. As the leader of the summoned Chiesters, She is very composed and serious in her work. She is in charge of guard and recon.
She is the fantasy version of one of the ceramic bunnies that Maria used to play with.