Victor Granger is one of the cloned colonists of Mariposa, a government minister grown from the same original as Prime Minister Wilson Granger.
Victor Granger appears in Up the Long Ladder. Mariposa was settled by the five survivors of a crashed colony ship, who populated their world by cloning themselves. Three centuries later every Mariposan is a copy of one of those five, and several Grangers hold office.
Victor serves as minister of health alongside Wilson Granger. By the time the Enterprise-D arrives, repeated copying has caused replicative fading, and the colony needs fresh genetic material. When Riker and Pulaski refuse to donate cells, the Mariposans take samples by stealth.
Riker destroys the clones grown from the stolen tissue. Picard then proposes that the Mariposans merge with the Bringloidi, a farming people rescued from the same colony ship's other settlement, and return to natural reproduction.