Suzuna possesses long gray hair and striking gray eyes. Her attire features a distinctive cascade necklace, a brown jacket layered over a crisp white dress shirt.

Her personality is serious, marked by steadfast loyalty to The Agency, a mysterious organization. Within the narrative, she functions as an active agent relentlessly pursuing the protagonist Yuki, positioning her as an antagonistic force aligned with the organization's objectives.

Her name, written in katakana as スズナ, carries no inherent meaning. Various kanji interpretations exist, offering possibilities like 鈴菜 (combining "bell" and "vegetables/greens"), 涼雪 ("cool/refreshing" and "snow"), or 珠洲菜 ("bead/pearl/gem," "state," and "vegetables/greens").