Z

"Black Arm" Z (黒腕のゼット) is the main antagonist of the One Piece Film Z. He was once a Marine Admiral before his resignation.

Appearance
Z appears as a big and muscular man with short purple hair and a large mechanical right arm connected to the left hip with some mast rigging. He dresses in a Marine-like coat with his Jolly Roger impressed on it and baggy trousers tucked into his boots.

His Jolly Roger has a skull with slanted eye-sockets and a spiky crown, while his cross-bones is similar to an inverted Marine symbol and a cross or sword with a Yoru-like hilt. The placement of the skull on top of the inverted "wings" give the skull the appearance of elongated tusks.

Abilities and Powers
In a trailer, he is referred to as being the strongest enemy that the Straw Hats have faced yet.

In the past he was a Marine admiral, which means his command over the soldiers within the organization was once the second highest, just underneath the Fleet Admiral. He also had the authority to issue a Buster Call on any island he deemed a threat, and could give that authority to any World Government agent. With his resignation he forfeited such privileges.

Combat-wise, he is able to use Haki, as all Marines with a rank of vice admiral or higher are capable of such a feat. Being an admiral also means he was once crowned as the World Government's greatest military power, being among the strongest individual fighters within the government and Marine organizations of his time.

History
For a yet unknown reason, he resigned his position as a Marine admiral.

Trivia

 * More of his characteristics, like his coat or the Jolly Roger, reveal a former affiliation with the Marines.
 * In one of the first trailers, one of the film logos that appears is the original Marine symbol.
 * Z shares many similarities with the main antagonist of the movie Strong World, Shiki.
 * Both are the antagonists of movies overseen by Oda himself during the whole process.
 * Both also have remarkable prostheses, with Shiki having two swords replacing his feet and Z having a huge mechanical arm.
 * Both characters have elements found in ships in their own bodies, with Shiki having a steering wheel on his head and Z having two mast rigging across his chest, possibly supporting his mechanical arm.
 * Both are significantly older than Luffy.