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Horace Slughorn
SlytherinProfessorPotions master

Horace Slughorn

Appears 407 times in the books

Former Head of Slytherin who collects famous students. His edited memory hides the advice he once gave Tom Riddle about Horcruxes. Harry wins the true memory, and Slughorn returns to fight.

Appears in

  1. Harry Potter and the Half-Blood Prince
  2. Harry Potter and the Deathly Hallows

On the timeline

  1. 1996-08

    Slughorn comes back

    Dumbledore and Harry recruit Horace Slughorn. Harry needs the memory Slughorn is ashamed of.
  2. 1997-03-01

    Ron is poisoned

    On his seventeenth birthday Ron drinks poisoned mead meant for Dumbledore. Harry keeps him alive with a bezoar.