Neptune Slaughter
From Gnomon Chronicles
Neptune Slaughter is a supervillain.
Scrimshaw abuse and pact with Poseidon

Poseidon holding a trident. Corinthian plaque, 550–525 BC. Inscription (not shown) reads: "To N. Slaughter. P."
A former abusive scrimshander, Slaughter renounced the knife and the ivory alike in a sacred pact with Poseidon.
As a result, Slaughter now controls 51% of the scrimshaw abuse trade in any coastal region subject to earthquakes, making him a very wealthy man indeed.
Aquaman (nonfiction)
Neptune Slaughter is prepared to attack Aquaman on sight.
This offer is contingent upon DC Comics and myself (as Slaughter's agent) agreeing to terms beforehand.
Papillon
Slaughter is a great admirer of the novel Papillon by convicted felon and fugitive Henri Charrière.