A war veteran who boards the wreck to find his missing daughter, later arms himself to fight against the antagonistic crew but ultimately perishes in the ensuing shootout.
They cooperate within the survivor group during the ascent and escape.
Celeste and Frank become members of the survivor group moving through the flooded Poseidon and later escaping toward the tugboat.
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 become armed allies during the firefight.
Frank and Larry find guns together with Turner, and they participate in the ensuing shoot-out against Svevo's crew.
They stand on opposing sides of the struggle aboard the wreck.
Doyle is identified as one of Svevo's men, while Frank later arms himself and fights against the antagonistic crew during the shoot-out.
Explore the full interactive character relationship map of Beyond the Poseidon Adventure