Kamala was a female Kriosian empathic metamorph in the 24th century.
In 2368 Kamala was a passenger aboard the USS Enterprise-D. (TNG episode: "The Perfect Mate")
In 2372, a Changeling infiltrator boarded the USS Enterprise-E and studied Picard's personal logs. It then used this information during negotiations to state it could assume the form of any of Picard's female acquaintances, including Kamala. (TNG eBook: A Sea of Troubles)
In 2376, William T. Riker had a flashback to his meeting of Kamala eight years earlier when he was exposed to the Orb of Memory. (DS9 novel: Avatar, Book One)