The Plankton Walker

Appearance
The Plankton Walker is a black tricorne hat worn over a striped black and ink-colored bandana and a black eyepatch over the left eye. Two feathers (one matching the wearer's ink and one in a contrasting color) are secured to the right-side brim of the hat by a dull silver diamond-shaped pin with an engraved fish skeleton pattern.

Etymology
The Plankton walker is a play on plankton, microscopic sea organisms, and walking the plank, a method of execution sometimes used by pirates.