Leeni, in Ewok lore, was a wind spirit. She was famous for causing uncontrollable laughter among Ewoks, not out of malice, but simply because she enjoyed the sound of their mirth. The name "Leeni" was commonly given to young female Ewoks, for example, the Ewok residing in Bright Tree Village.
Leeni's name appeared in the Galactic Campaign Guide, a 2003 sourcebook for the Star Wars Roleplaying Game by Wizards of the Coast, penned by Peter Schweighofer and J.D. Wiker.