Kasim serves as an antagonist who initially poses as a fruit farmer, a deceptive identity used to hinder legitimate farmers and obstruct their sales. His true allegiance lies as an evil magician serving a master named Lodra.

He possesses white hair and green eyes. A significant battle results in the permanent loss of his right arm, altering his appearance.

Kasim employs morally reprehensible methods to achieve his goals. He sets traps to capture targets and uses threats of extreme violence, including sexual assault, to compel compliance or fealty. His ruthlessness is evident in his willingness to inflict suffering, particularly on hostages.

His background includes orchestrating an early trap disguised as a farmer, specifically targeting the protagonists. This encounter escalated into a direct confrontation where he fought alongside an accomplice named Grami. During the battle, Kasim summoned and controlled elemental spirits using his magic. However, intervention by a powerful wind spirit aiding the protagonists led to his defeat, the severing of his arm, and his subsequent escape.

Kasim's primary abilities focus on significant prowess in summoning and controlling elemental spirits. He also utilizes a distinct technique called the Crimson Pact, which involves harnessing the lifeblood of living beings to imbue other creatures or entities with enhanced power.