Martin Benbeck is the interpreter of the founders' intentions in the genetically engineered human colony on Moab IV, and the fiercest opponent of any contact with the Enterprise in The Masterpiece Society.
Martin Benbeck appears in the fifth-season episode The Masterpiece Society. Like everyone in the sealed colony on Moab IV he was bred for his function, and his function is to safeguard the founders' plan: he judges whether any proposed change is consistent with the balanced society they designed two centuries earlier.
When the Enterprise arrives to warn that a stellar core fragment will devastate the colony, Benbeck argues against letting outsiders in at all, and is appalled as the colony's leader Aaron Conor grows close to Deanna Troi and the scientist Hannah Bates works alongside Geordi La Forge.
His fears prove partly justified. Although the colony is saved, a number of its people choose to leave with the Enterprise, tearing holes in a society in which every member was meant to be irreplaceable.