Arataka Reigen is a key character in the anime series Mob Psycho 100. As a self-proclaimed psychic and the mentor of the protagonist, Shigeo 'Mob' Kageyama, Reigen often finds himself in comically absurd situations. Despite lacking genuine psychic powers, his cunning, charisma, and quick thinking make him a formidable presence. He runs the Spirits and Such Consultation Office, offering exorcism services, often with dubious methods. Reigen's role is pivotal as a mentor and father figure to Mob, providing him guidance and moral support, while also delivering much of the series' humor with his antics.