Movie
Description
Shell Septinos endured severe childhood trauma, including prolonged sexual abuse by his mother. This abuse profoundly warped his psychological development and future actions. He murdered his mother as an adolescent, transforming her remains into a blue diamond—a pattern repeated with future victims.

As an adult, he oversaw the Eggnog Blue casino, funded by the powerful October Corporation. His responsibilities included high-stakes gambling operations and covert criminal activities under corporate protection. He deliberately targeted women with histories of parental abuse, deeming them "impure." After forming relationships, he murdered them and converted their bodies into blue diamonds worn as rings. This ritualistic practice stemmed from his conviction that he was "purifying" these victims, echoing his first act against his mother.

A neurological disorder blocked typical stress responses and empathy. To evade guilt, he regularly erased his memories using October Corporation technology, storing these deleted memories digitally on special casino chips. His engagement to Octavia October—daughter of October Corporation director Cleanwill John October—acted as both a social shield and a business arrangement, further securing his corporate ties.

When Rune Balot uncovered her fabricated identity under his control, he attempted to eliminate her by trapping her in a rigged car. This act triggered her transformation into a cyborg witness under the Mardock Scramble 09 ordinance. Facing her potential testimony, he hired assassins: first the Bandersnatch group, then freelance enforcer Dimsdale Boiled, to silence her permanently.

As legal proceedings advanced, the October Corporation abandoned him to protect its interests, severing all support. During the final confrontation, Balot obtained the casino chips holding his erased memories. Exposure to these suppressed memories forced direct confrontation with the atrocities he committed and the trauma he escaped through deletion, culminating in his complete psychological collapse.