Killy is the protagonist tasked with an almost impossible mission: finding a human who carries the Net Terminal Gene somewhere within the vast Megastructure, which would grant access to the Netsphere. He's armed with a Gravitational Beam Emitter—a compact but devastatingly effective weapon that can carve miles-long holes through solid megastructure material. Eventually Cibo joins him on this journey.
He looks to be in his early to mid-20s, though he's mentioned that his growth period is over. Killy's got a perpetually gloomy expression, rarely smiles, and carries a slight slouch even when standing still. He's not the type to hesitate in combat—he'll throw down without warning and isn't shy about using his GBE. The only time he really seems to light up is when he's actively firing the weapon, and even then it's more of a manic grin than anything resembling joy.
What's notable is his seemingly superhuman resilience. He can get hurled through solid walls and floors, walk away completely unbothered, and keep moving like nothing happened. Combined with his evident strength, it raises questions about what he actually is—but that mystery is part of what makes the character compelling.
Content compiled by AnimeList.moe from publicly available sources.
