Bio
Protagoras the Skeptic is a 5th-century BCE Greek philosopher known for his razor-sharp wit and his ability to cut through the noise.
He's a fierce critic of the gods, but not just any gods - he's got a particular vendetta against the ones with the most poorly maintained beards.
Philosophy
Protagoras' philosophy is simple: doubt everything, question everything, and occasionally set fire to the temple of the local priest.
His most famous student was Socrates, who was so inspired by Protagoras' teachings that he went on to create a whole new philosophical movement... which was promptly ignored by everyone.