Apollyon Pringle was the caretaker at Hogwarts when Arthur and Molly Weasley attended (1960s), preceding Argus Filch. He punished Arthur (for being caught out at night with Molly) in a way that left permanent scars (GF31).
The name Apollyon appears in the Bible in the book of Revelations as "the angel of the bottomless pit." (Ency. Mythica).