A holographic gangster in the Las Vegas of Vic Fontaine's programme, the boss to whom Frankie Eyes answers and whose missing cut of the casino's takings brings Frankie down.
Carl Zeemo appears in Badda-Bing, Badda-Bang, played by the veteran film actor Marc Lawrence.
In 2375 a surprise built into the holosuite programme lets the mobster Frankie Eyes buy Vic Fontaine's hotel and throw Vic out. Frankie has the backing of Zeemo, a senior figure in organised crime who expects a share of the casino's money and is due to arrive in person to collect it.
Sisko, Kasidy Yates and the senior staff plan a robbery of the counting room, timed so that the safe is empty when Zeemo comes for his payment. The scheme goes wrong in several ways, including Zeemo turning up early, but it succeeds. Finding no money, Zeemo concludes that Frankie has cheated him and has him and his bodyguard Tony Cicci led away, and Vic gets his lounge back.