Hubert is the brother of Louise and Duane Quack and the son of Elizabeth Quack and Horatio Quack. He and his family were captured by Snively and held hostage until Dr. Quack agreed to work with Snively. They were later set free and were reunited with their father. (StH: #49)
- Like the other Quack children, Hubert's name is based off that of one of Donald Duck's nephews: in this case, Huey.