Frool was a Ferengi male in the 24th century, a waiter at Quark's on Deep Space 9. (DS9 episode: "Bar Association") In April 2376 at a party in Quark's, Quark specifically assigned Frool to keep Dr. Julian Bashir's glass of whiskey topped up, knowing the troubled lover would be a good source of monetary profit that night. (DS9 novel: Avatar, Book One)