Sonju

(The Promised Neverland) Sonju is a tall and powerful demon, the youngest son of the former king. He roams the Demon Forest alongside Mujika, a small demoness, and his demon horse. Stoic, calm, and often reserved, Sonju uses his imposing appearance to intimidate others, particularly humans. Like most demons, he wears a silver mask to protect his middle eye—the destruction of which is the only way to kill a demon completely. Despite his fearsome presence, Sonju shows genuine for those he values, such as Mujika or even some human children who have escaped from the farms. He shares Mujika’s faith, belonging to a religious sect known as the "Heathens," who are shunned by other demons for refusing to consume human flesh. Having tasted Mujika’s sacred blood, Sonju no longer degenerates, even without eating humans.