Niches (SPOILERS)

When Ryuta, Yuko and God Eagle venture into Hell to save Patrick and Roberto, they're greeted by Friedrich Nietzsche, turned into a demon named Niches. When he tries to appeal to Ryuta's intelligence by bringing up most of his peers "woken up" (as in, became atheists), Ryuta refuses and reads him the riot act for trying to make people miserable by spreading atheism, which causes the youth to emanate a light that blinds the demons around him.

Example of:
No Historical Figures Were Harmed