A blind passenger trapped aboard the listing vessel, relying on his wife's assistance and later joining the main group in their desperate ascent to the surface.
Celeste and Harold share the same endangered survivor group.
Harold is found aboard the Poseidon and subsequently joins the group that includes Celeste during its escape through the wreck.
Their connection is established through shared survival and group movement.
Frank and Harold are both rescued from the wreck's interior and travel with the larger survivor group during the ascent.
They share the same escape route and survival objectives.
Larry and Harold are both among the survivors who continue with the group as water floods the Poseidon and the party seeks an exit.
Doyle's faction threatens Harold's survival.
Doyle serves the crew gathering plutonium and preventing the survivors from escaping, while Harold travels with the endangered survivor group.
Explore the full interactive character relationship map of Beyond the Poseidon Adventure