Radath Keiy was a male Farruna captain of the Shannar, and was large even for a member of his large species.

In 2371, Keiy docked the Shannar at Deep Space 9, where Odo asked Keiy if he knew anything about the Helios, a ship that was attacking starships on the Cardassian border, although Keiy claimed to have heard nothing. Odo noted that Keiy was a untrustworthy individual who had been involved in a badly planned smuggling operation three years earlier. (DS9 novel: Proud Helios)