Oin

Ōin is one of Marin's two robot bodyguards.

Appearance
Oin is a very dark grey (almost black) robot. In stark contrast to its counterpart Riyu, Oin is short (about as tall as Hugeo) and incredibly massive in width. It has no legs, being supported by repulsorlifts similar to regular Phantoms. It has two very thickset arms that are almost as wide as barrels. Its face is very nondescript, only having two glowing eyes and a small rectangular voice chip.

Personality
Being a robot, Oin does not have much personality. However, it does not seem to be fond of talking, saying only the bare minimum of words required. It does not care about any collateral destruction resulting from its attacks.

Abilities and Powers
Before the Ghost City Arc, Oin had never lost a fight, although it is unclear what kind of opponents it has faced. Oin's body is incredibly durable, being able to come into contact with massive amounts of magma while only obtaining scorch marks. Oin considers itself to be completely indestructible. However, its bottom area is not as tough, and can be a pathway to causing damage if the attack is strong enough.

Due to Oin's size and durability, it has incredible attack power, being able to send people flying and smash hard surfaces with ease. This is increased even more when Oin pulls its hammers out. However, despite its large frame, Oin is incredibly fast, setting up a deadly combination that often catches people off-guard.

Weapons
Oin carries two spiked hammers in its body which it can pull out at any time.

Trivia

 * "Oin" means rhyme in Japanese while "Riyu" means reason.