Hiead Gner, known as Candidate 87, is a 15-year-old orphan whose parents perished in humanity’s war against the alien Victim species. Hardship carved his early years, fueling a simmering disdain for those nurtured in privilege and forging a cold, detached persona. This distrust crystallizes in his rivalry with Zero Enna, an optimistic counterpart whose contrasting outlook sharpens their adversarial dynamic.

Standing 160 cm tall and weighing 52 kg, Hiead bears the rare EO blood type necessary to pilot Ingrids. His unspecified EX ability mirrors Zero’s latent potential, though his manifests with erratic, dangerous intensity. During training, a duel against senior candidate Force Wartlliam spiraled catastrophically when Hiead’s unchecked power inflicted grave injuries, exposing his volatile struggle for control.

Timid Repairer Ikhny Allecto navigates his abrasive demeanor with faltering attempts to earn his favor, her insecurity driving her to sabotage Zero’s Pro-ING unit—an act uncovered by Kizna Towryk. This incident underscores the ripple effects of Hiead’s influence, even as his rivalry with Zero transcends personal animosity, framing them as opposing forces within the academy’s competitive hierarchy.

His development in spin-offs, movies, or OVAs remains undocumented beyond the core series and manga.