Iruma Suzuki, a human male sold to demon Sullivan by neglectful parents at age 14, endured an upbringing marked by extreme neglect and dangerous labor. This forged exceptional survival abilities, notably an "Overwhelming Crisis Evasion Capability" allowing him to dodge any attack. His past also instilled an inability to refuse requests containing words like "Help," "Please," or "I beg you," coupled with a strong aversion to conflict and wastefulness. He possesses an "Extreme Appetite" stemming from past starvation. Physically, Iruma has cerulean blue hair, often tied in a short ponytail during activities and featuring a distinctive ahoge. His large, round eyes display Egyptian-blue irises. He wears the standard Babyls Demon School male uniform: a blue jacket with white stripe detailing, matching pants, a red bow bearing a demon-eye decoration, and dark-blue dress shoes. The Ring of Gluttony adorns his right middle finger, enabling magic use and housing the spirit Alikred. Significant appearance changes occur during his "Wicked Phase" (induced by Alikred): hair turns purple and smoother, eyes narrow into magenta slits with slit pupils, his jacket hangs open like a cape, and his red bow is absent. Post-Music Festival, he wears dark nail polish, and upon reaching rank Hé (5), he sports a feather earring. Enrolled in Babyls Demon School by Sullivan, Iruma hides his humanity to avoid being eaten. Despite efforts to remain unnoticed, he immediately gains attention after accidentally defeating top student Asmodeus Alice with a German suplex, earning Alice's unwavering loyalty. Placed in the Misfit Class, he starts at rank Aleph (1) after the ranking owl awards him the Ring of Gluttony instead of a badge. During a familiar summoning lesson, he accidentally binds teacher Kalego Naberius as his familiar. Initially lacking personal goals, his resolve to ascend the demon ranks crystallizes after meeting student council president Ameri Azazel, who encourages self-improvement. This ambition solidifies into protecting those close to him after the Walter Park incident. He currently holds rank 5.5 (between Hé and Vau), the second-highest student rank at Babyls. Iruma demonstrates adaptability and leadership, particularly evident during his strategic mobilization of the Misfit Class in Wicked Phase to secure the Royal One classroom. His growth includes developing archery expertise under Barbatos Bachiko, adopting a ranged combat style complementing his evasion skills. He forms deep bonds, especially with Alice Asmodeus and Clara Valac. His kindness extends even to antagonists like Kirio Amy, whom he pities rather than hates after Amy's attempt to destroy the school. He remains oblivious to romantic feelings from Ameri, Clara, and others, partly due to his affection-deprived upbringing. A core fear is friends discovering his humanity and rejecting him, though he gradually accepts that concealing this secret preserves their bonds and safety. Notable involvements include joining the Magical Tools Batra, crossdressing as "Irumi" to support Kerori's evidol career (showcasing surprising skill and earning the alias), and absorbing catastrophic mana during the Walter Park crisis to save civilians. His achievements and latent potential position him as a candidate for the next Demon King. His journey charts a transition from passivity to proactive leadership, driven by a commitment to safeguard his friendships and newfound family in the Netherworld.