Misha Kreutzev acts as the earthly alias for Archangel Gabriel while inhabiting Sasha Kreutzev, a Russian Orthodox Annihilatus agent. This possession arises from distorted elemental alignments, circumventing divine laws to merge Gabriel’s essence with traits of Michael, adopting the blended identity "Misha." The hybrid form merges Sasha’s human features with Gabriel’s divinity, presenting an androgynous figure with pale skin etched in gold, crystalline water-formed wings, and a hovering blue halo. Blond hair remains concealed beneath a crimson hooded cape, while feminine attributes like breasts contrast with the absence of visible genitalia.
Initially emotionless, Gabriel gradually cultivates a personality shaped by earthly exposure, craving heavenly return while adopting Sasha’s formal speech and a fondness for sweets. Though bound to divine mandates, the archangel exhibits ruthless efficiency, exemplified by brutal interventions against threats like Hino Jinsaku, opposing human destruction only when it disrupts celestial agendas.
During the Angel Fall incident, Gabriel infiltrates as Misha to investigate a ritual destabilizing angelic orders, collaborating with Kamijou Touma’s group to expose the orchestrator. The archangel deploys spells such as Water Snake to extract truths and Water Wing for combat, though weakened by elemental discord. Kanzaki Kaori delays Misha until the ritual’s collapse forces Gabriel’s withdrawal, leaving residual telesma within Sasha.
In World War III, Fiamma of the Right reawakens Gabriel as Misha via Sasha’s lingering telesma, exploiting merged Michael-Gabriel traits to enact Astro In Hand—shifting Earth’s rotation to empower Fiamma’s Star of Bethlehem. Misha unleashes cataclysmic assaults against armies and espers like Accelerator, summoning meteor strikes via God’s Purge. The conflict culminates when Touma disrupts Fiamma’s control and Acqua of the Back siphons half of Gabriel’s power, destabilizing the manifestation. A final bid to restore strength through Arctic ice melt fails against Touma’s intervention, banishing Gabriel heavenward.
Post-possession, Sasha endures prolonged church surveillance due to residual telesma rivaling saints, marking her as a geopolitical target. She allies with figures like Vento of the Front for protection and joins Patriarch Tsarskiy’s anti-Gremlin operations, retaining her formal speech and stoicism despite trauma.
Gabriel’s powers span hydrokinesis, telesma-driven reality warping, celestial manipulation, and sensory interference. Signature spells include Water Wing’s crystalline mountain-shattering formations and God’s Purge’s apocalyptic meteors. Vulnerabilities center on elemental misalignment, reliance on summoners like Fiamma, and susceptibility to control disruption or telesma absorption.