A Farian criminal working for Liam Bilby in the Orion Syndicate on Farius Prime, who becomes a colleague of the undercover Miles O'Brien in 2374.
Flith appears in the Deep Space Nine episode Honor Among Thieves. A Farian, he is the technical hand in Liam Bilby's crew, and it is his failure to get a piece of equipment working that gives Miles O'Brien, posing as a fixer named Connelly, the opening he needs to join them.
Flith is quick-tongued and rather pleased with himself, and he does not enjoy being shown up by the newcomer. He nevertheless comes to rely on Connelly's skills, as when the crew acquire a batch of Klingon disruptor rifles that will not fire.
Like Krole, he goes along with Bilby when the Syndicate boss Raimus and the Vorta Gelnon order the killing of a Klingon ambassador, an operation O'Brien has already reported to Starfleet.