Adonis Otogari, a young man of mixed Japanese and SWANA heritage, hails from an immensely wealthy and prestigious family ranked among his region's top five most influential households. As a child, he exhibited a timid nature, easily frightened by storms within the family's lavish home and fairy tales about djinns. His mother often comforted him with song, profoundly shaping his future path toward music. An early display of his compassion occurred at a family party where he consoled a crying girl named Urania by offering sweets and performing a song and dance. Complications in his home country later led Adonis to relocate to Japan with his mother and sisters, while his father remained. His sisters initially bullied him, motivating him to build significant physical strength, though they subsequently exploited this strength for tasks like carrying their belongings. Recruited as a teenager by Rei Sakuma during a trip abroad, Adonis enrolled at Yumenosaki Academy and joined the idol unit UNDEAD under Rhythm Link. Initially described as quiet and reserved, his appearance often led others to perceive him as intimidating despite his fundamentally gentle nature. He faced significant challenges integrating into Japanese society, frequently seeking guidance from classmates like Souma Kanzaki and unitmate Koga Oogami on cultural nuances. This adaptation struggle extended to his idol work, where his natural reticence hindered conversational aspects, though he resolved to express himself primarily through performance. Physically distinctive, Adonis possesses a tall, muscular build and a darker complexion. His features include messy purple hair brushed back on the left with longer strands on the right, amber eyes, and a small metal earring on his left ear. He typically wears the Yumenosaki uniform with an unbuttoned blazer, undone collar, and blue or green tie. For UNDEAD performances, his stage outfit consists of a fur-lined half-sleeve jacket, ripped black pants, high boots, and accessories like golden beaded chains and a black peaked cap. Adonis's personality centers on profound kindness and a protective instinct toward those he perceives as vulnerable, sometimes leading him to hastily assume mistreatment before apologizing upon clarification. This protectiveness extends to small animals, which he loves but fears touching due to concerns about accidentally harming them. He often recommends meat or nutritious food to others, reflecting his focus on strength and health. Despite his physical prowess, he experiences insecurity about his imposing stature, worrying about frightening smaller individuals or objects. He worked to improve his communication skills over time, though occasional conversational awkwardness remains. His core motivation as an idol is promoting global peace and bringing smiles through music, inspired by his mother’s band. He aims to send UNDEAD's music worldwide alongside his unitmates, whom he considers irreplaceable friends. His development shows progression from relying solely on song and dance for expression to gradually engaging more verbally, though he still prioritizes musical performance as his primary outlet. Relationships within UNDEAD hold deep significance: Rei Sakuma commands his deep respect, Koga Oogami is acknowledged as a trusted companion, and Kaoru Hakaze notes Adonis's intrinsic kindness despite initial impressions. Notable traits include exceptional skill with the ocarina, capable of moving others to tears, and unfamiliarity with modern technology. His birthday, August 29, incorporates Japanese wordplay ("niku" for 29, meaning "meat"). The etymology of his name references the Greek god Adonis, while his surname combines characters phonetically approximating "sound" or "voice," aligning with his musical path. His autograph, written only in katakana, reflects ongoing challenges with Japanese script.