A Parselmouth is one who can speak Parseltongue, the language of snakes. Since the decidedly not nice wizard Salazar Slytherin and his heir, Voldemort, are known for being Parselmouths, this ability is generally regarded as suspicious by upright citizens of the Wizarding World. Harry Potter was the butt of this suspicion when he accidentally revealed that he, too, is a Parselmouth during Chamber of Secrets. It is widely supposed that he got the ability from Voldemort when Voldemort tried to kill him as a baby.

Parselmouths and Parseltongue originate in the Harry Potter continuum, and if this innate and very rare ability is spotted in an original character in this continuum, it is a charge.

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