Oliva

"Gorilla Face" Oliver is the former boss of Port Gibraltar Island, which was part of Whitebeard's territory. However, he was deposed by Portgas D. Ace due to partaking in the slave trade and sent to Impel Down.

Appearance
Oliver's appearance is unknown.

Personality
Oliver is an unscrupulous individual, as seen by his participation in the slave trade despite Whitebeard forbidding it.

Abilities and Powers
As boss of Port Gibraltar Island, Oliver had authority over its residents as well as the protection of Whitebeard until Ace stripped him of his position.

One Piece novel A
Oliver was caught dealing in the slave trade, which Whitebeard had forbidden him to do, by Portgas D. Ace, and was forced to surrender. He was then arranged to be delivered to Impel Down.