Ard'rian McKenzie was a female Human colonist in the 24th century. She was born in the colony on the planet of Tau Cygna V as a descendant of the original settlers who arrived on the SS Artemis. Like all the other colonists, she was immune to the effects of hyperonic radiation. She had a keen interest in technology, particularly cybernetics, though the colony's computers were not nearly as sophisticated. McKenzie left the planet with the other colonists three weeks after. (TNG: "The Ensigns of Command" )