Neuro Nougami is the enigmatic and charismatic protagonist of the anime and manga series 'Majin Tantei Nougami Neuro'. He is a demon detective from the demon world who feeds on mysteries and puzzles. Neuro comes to the human world after devouring all mysteries in his own realm, seeking to satisfy his insatiable hunger for more complex enigmas. Despite his sinister nature, Neuro partners with a high school girl named Yako Katsuragi to solve various cases. While he appears to be cruel and demanding, Neuro's presence is pivotal in unraveling the truth behind each mystery they encounter.