Possible Clues:

• Wicked biblical king
• Moby menacer
• Moby Dick's hunter
• Starbuck's skipper
• Captain after a white whale
• Captain of the whaler Pequod
• Melville's madman
• Fictional character who declares 'Sleep? ... I do not sleep, I die'
• 'I drive the sea!' crier
• Jezebel's husband has a costume without it