The Inflatus Jinx (Inflatus) is a jinx used to increase the size of the targeted creature by inflating it; once inflated beyond the maximum capacity of its outer size, the targeted creature will explode into colourful party balloons.
Harry Potter, Ronald Weasley and Hermione Granger used this spell on various creatures around the grounds of Hogwarts Castle throughout the 1994-1995 school year, under the authorisation of their Defence Against the Dark Arts teacher, Professor Bartemius Crouch Jr. (who was disguised as Alastor Moody).
The prefix 'Inflate' derives from the English verb "to expand with oxygen".
Behind the scenes
- This could possibly be the spell Harry Potter used in 1993 to inflate his Aunt Marge, when he lost control of his magic.
- Harry Potter and the Goblet of Fire (video game) (First appearance)