A member of Species 8472 who takes the form of a human Starfleet admiral inside the simulated Starfleet Headquarters that Voyager discovers in the Delta Quadrant in 2375.
Admiral Bullock is one of the human identities adopted by members of Species 8472 in the Voyager episode In the Flesh. He serves as a senior officer in a detailed recreation of Starfleet Headquarters and the Academy grounds, built inside a space habitat so that his people can rehearse an infiltration of Earth.
Bullock is among the most suspicious of the impostors. When Chakotay, who has slipped into the simulation, is exposed, Bullock favours treating Voyager as an enemy, and he remains openly hostile once Captain Janeway opens talks.
He sits alongside the Boothby and Valerie Archer impostors at the negotiating table aboard Voyager, where the two sides finally agree to exchange information and step back from war.