Of all the allies in the Sentinel's ranks, only one, is known by as many names and is feared in as many lands. Called Capt. CoCo by his mates, Jacksparrow by others, The Legendary Mariner by some. but only a select few, know his real name and what it stands for. He can harness the powers of the depths to conjure torrential geysers that blast his enemies into the air.
