Hyrsam occasionally claims that he was born from the first joke ever told. Of course, Hyrsam is a well-known fabricator, and his words should never be taken at face value. However, all jokes contain a kernel of truth, and it is clear that Hyrsam possesses a mastery of humor and wit unmatched by any other being. What's more, he understands every audience he entertains. A group of children will receive a humorous array of pratfalls and puns, while a group of jaded adults will be treated to scathing and astute satire.
A born rabble-rouser, Hyrsam loves nothing more than dancing and telling jokes. Able to turn magic on its head and inspire wildness with his music, the Prince of Fools is a difficult foe to hurt.
Hyrsam is a fun-loving and dangerous entity. Older than all but the most Ancient Fey, Hyrsam remembers the time before the first elven kingdoms. He is the spirit of music, a force of revelry and humor made flesh. He loves nothing more than rich wine, good music, and attractive women, and with his natural charm it is easy for him to acquire them all and more.
Prince Hyrsam (MoP p. 36) – King of the Satyrs