A Professor of Magic at Hogwarts - Chapter 460: The Disguise Charm

... ike Dementors and Inferi, capable of transmitting information over great distances and even passing through solid objects. He had developed various clever uses for it himself. Yet, one question lingered in his mind: what was the original purpose of this charm?

Few realized that the Protego Charm wasn't specifically developed to counter Inferi. In fact, its appearance predates that of Inferi by a significant margin. "Invincible Andros," a wizard who could summon giant-sized protective fig ...