In the anime , the fourth episode of each season marks a significant turning point or introduction of a major antagonist: Season 1, Episode 4: "Idiots Only Event ~Kin~"
: The spirit is revealed to be Keiji Mogami , a legendary former psychic and assassin who wants to show Mob a world of pure suffering. Mob Psycho 100 Episode 4
: After his defeat, Dimple attaches himself to Mob, hoping to use him to achieve his dream of becoming a god. In the anime , the fourth episode of
: A conflict between Salt Middle School (Mob's school) and Black Vinegar Middle School escalates when delinquents kidnap Mob. In the anime