Polyjuice

Some articles on polyjuice:

Order Of The Phoenix (fiction) - Notable Order Members - Alastor Moody
... who subdues him with the Imperius Curse and takes Polyjuice Potion to assume his appearance ... He keeps the real Moody alive as a source both of Polyjuice potion ingredients and of personal information helpful in putting the impersonation over, and takes Moody's place at Hogwarts ... private hip flask allows Crouch to take the Polyjuice Potion as needed without raising suspicion ...
Magical Objects In Harry Potter - Potions - Polyjuice Potion
... The Polyjuice Potion allows the drinker to assume the appearance of someone else for exactly one hour ... Polyjuice Potion only works correctly when done on human-to-human transfiguration, as Hermione discovers in Chamber of Secrets when she inadvertently takes a dose ...
HP2 - Plot
... that Draco is the heir of Slytherin, the trio start making Polyjuice Potion, a brew which allows them to take on another's form ... At Christmas, Harry and Ron use the finished Polyjuice Potion to disguise themselves as Draco's friends Crabbe for Ron and Goyle for Harry ... who haunts the bathroom where they made the Polyjuice Potion, must have been the girl killed by the monster ...