Frenda Seivelun is a core member of ITEM, though she stands out for what she doesn't have—no esper ability to speak of. Instead, she's built a reputation as a vicious close-combat fighter with serious expertise in traps and hidden weapons. Fans often note her unpredictable fighting style, where casual banter and humor mask genuinely deadly tactics. She's got a mean streak too; there's something unsettling about how naturally she seems to enjoy ending people.
Outside of combat, she's pretty ordinary—talks like any girl her age would, obsesses over her legs (which she's genuinely proud of), and generally keeps things light. But that relaxed side clashes hard with her work dynamic. She and team leader Mugino Shizuri have something between a master-servant relationship, with Mugino constantly calling her out for being unprofessional or goofing off on the job.
It's also been revealed that she has a younger sister, Fremea Seivelun. The contrast between her casual, chatty demeanor and her viciousness in the field is what makes her genuinely dangerous—you never quite know which version you're getting until it's too late.
Content compiled by AnimeList.moe from publicly available sources.