- Out of all the sea bosses, Captain Ahab is the only mob that sails alone.
- His spear does not appear to be either a Spear or Magic Spear.
- Captain Ahab is a reference to another Captain Ahab, the captain of a whaling squad, serving as the main character of a the famously novel, "Moby Dick". His spear being another reference to his profession as a whaler. And his peg leg being a possible reference to when Moby Dick bit off Ahab's leg in the novel.
- His bounty is 55,000,000 lamina but when you kill him you only get around 6000 lamina.