Marshall Darling

Marshall Darling (Joe O'Connor) – Clarissa and Ferguson's father. He is an architect who designs unusually shaped buildings, mostly retail and tourist attractions (such as the "Fryfel Tower").

Clarissa sometimes comes to him for advice, but he is less reliable in this role than Janet. He often calls Clarissa "sport", seldom addressing her by name. He and Janet are former flower children from the 1960s.