Polyjuiced Hermione Granger
Brilliant Hogwarts Hospital Wing
Second-Floor Girls' Lavatory, Hogwarts Castle
An advanced student, Hermione Granger was capable of brewing Polyjuice Potion by her second year. She put this skill to use during an attempt to sneak into the Slytherin Common Room to ascertain the identity of Slytherin's heir. While Harry Potter and Ron Weasley successfully transformed into Vincent Crabbe and Gregory Goyle, Hermione's transformation did not go as planned. She spent several weeks in the Hospital Wing recovering after she accidentally used a piece of Millicent Bulstrode's cat's hair in her Polyjuice Potion.