A Patronus is a form of advanced magic in the Harry Potter series, where the witch or wizard casting the spell draws upon their happiest memories to produce a kind of shield to help protect themselves from Dementors, the guardians of the wizarding prison, Azkaban
. The Patronus has two forms: non-corporeal and corporeal
- Non-corporeal Patronus : This form appears as a thin wisp of silver that hovers like mist
- Corporeal Patronus : This form has a clearly defined shape and is more than vapor or smoke
The ability to cast a corporeal or non-corporeal Patronus is down to the skill of the witch or wizard
. Each Patronus is unique to the person who conjures it, and it is possible for multiple people to have the same Patronus
. Some examples of Patronuses include Harry Potter's stag, Ron Weasley's Jack Russell Terrier, Hermione Granger's otter, and Luna Lovegood's hare
. The Patronus Charm is a powerful defensive charm known to wizardkind and can also be used as a messenger between wizards
. It is usually not inevitable for a witch or wizard to produce a Patronus until they have undergone some form of magical training
