Player character
A player character (abbreviated PC) is a character controlled by an ordinary player (that is, a player other than the storyguide). The term "player character" is used in all pen and paper roleplaying games, not just Ars Magica. Contrast with Non-player character, but keep in mind that in troupe style play, the line can become confused for minor characters.
In Ars Magica, there are three distinct character types: magus, companion, and grog.