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Marcus Belby

Marcus Belby was a potential member of the Slug Club, a group of Professor Slughorn’s favorite students. Marcus, a Ravenclaw, is first introduced in book six. Marcus’ uncle, Damocles Belby, invented the Wolfsbane Potion (a potion which allows a werewolf to keep its human state of mind whilst transformed).

Initially, Professor Slughorn was fond of the Ravenclaw student, however, once he learned that Marcus didn’t see much of his uncle (Damocles and Marcus’ fathers don’t get along) he was dropped from the club, and subsequently left off the guest list to Slughorn’s famous parties.

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