Anti-Addison, real name Benjamin Hawthorne, is the navigator for the Leviathan, also known as AIDS under the control of Captain Antia. Benjamin is a merman, and is in constant need of being hydrated and can dry out easily if he forgets. He has the ability to shift between his two forms at will, and when swimming his usually has his tail. Aside from his duties as the navigator, Ben is also a source of pleasure for members of the ships crew. He has fathered a few children on his journey across the galaxy, always leaving them behind as the life he leads is not safe for children.