Marie Kurokami is a police officer serving the Guardian State faction. Her long, straight black hair falls to her thighs, and she is typically seen in standard police uniform, armed with a firearm. Marie wields blood manipulation, her power solidifying into a large crimson lance for combat. She also commands Pluto, a winged lion familiar aiding her in confrontations. Marie maintains a polite and reasonable demeanor, notably attempting to dissuade Isshin Kakihara from blaming Chihiro Kamina for uncontrollable events. Her story ends when Kaburagi Kark, using a scythe wielded by his familiar, fatally impales her from behind. This occurs after an uneasy bar encounter with Isshin, where her expression reveals apprehension about what's to come.