Kurogiri, a high-ranking member of the League of Villains, serves as a composed and loyal lieutenant to Tomura Shigaraki and All For One. His form is a shifting mass of dark purple mist punctuated by glowing yellow eyes and a distinctive metal neck brace. In civilian attire, he dons an elegant suit, though his villain costume shrouds his features, leaving only the brace visible. Prolonged interactions with allies seeking to revive his past identity gradually reveal physical traces of Oboro Shirakumo—fleeting glimpses of a shoulder, hand, or pupil. Once a U.A. High student named Oboro Shirakumo, he wielded the Cloud Quirk to generate and control clouds. His life ended during a work-study mission when All For One orchestrated an accident to steal Shota Aizawa’s Erasure Quirk. All For One repurposed Oboro’s corpse into Kurogiri, a High-End Nomu crafted by Dr. Kyudai Garaki. Merging Oboro’s Cloud Quirk with others, Kurogiri gained Warp Gate—an artificial ability to teleport via portals requiring precise spatial awareness. This power becomes indispensable to the League’s strategies. Hardwired for loyalty, Kurogiri prioritizes Tomura’s protection and mentorship. His tactical acumen shines during the U.S.J. invasion, where he neutralizes Thirteen’s Black Hole by redirecting it through his portals. Despite his programming, echoes of Oboro’s personality emerge: he expresses subtle concern for Tomura’s safety and instinctive urges to shield others. In the Final War, fractured programming and residual identity trigger a malfunction, compelling him to save Aizawa and Present Mic. This internal conflict peaks when he risks self-destruction to warp heroes into battle against All For One. Kurogiri orchestrates critical operations, from recruiting Stain to guiding Tomura through clashes with Dabi and Himiko Toga. He enables the League’s retreat during the Forest Training Camp raid and, in the *Vigilantes* spin-off, aids All For One at the Underground Masquerade by manipulating combat outcomes and harvesting Quirks. Captured and confined first in Tartarus, then Central Hospital, he faces Aizawa and Present Mic’s efforts to awaken Oboro’s consciousness. Though dismissive of his past, he briefly exhibits emotional flickers—tears spill when rescuing his former friends. In his final moments, Kurogiri sacrifices himself to shield Tomura, deploying a Warp Gate that consumes his deteriorating body. This act, driven by programmed duty and vestigial loyalty, crystallizes his tragic duality: a weaponized husk clinging to fragments of its former self. His dissolution leaves redemption unresolved but confirms the enduring spark of Oboro’s selflessness within the machine.