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Perona (ペローナ, Perōna?) is a girl that is able to produce ghosts from her body through the powers of the Horo Horo no Mi. She was the Zombie Animal and Zombie Ambush Commander of Thriller Bark before the collapse of Gecko Moria's zombie army.[2] She is one of the major antagonists of the Thriller Bark arc. Perona was also one of the Mysterious Four of Thriller Bark. At this point in time, she and Zoro have formed some form of alliance.
Appearance : Perona's looks are inspired by the 'Gothic Lolita' style, with black, white and bright red clothing. Her hair is light pink colored and very long. Perona's usual hair style has it tied in two high pigtails with somewhat flower-shaped black and white hairpins, and she always wears a red crown with a cross on top. Her stockings cover her entire legs and wears a mini-skirt to match. She is often seen carrying around a red umbrella shaped somewhat like a cute version of a mini devil before her battle with Usopp. She is drawn in a rather different style from the usual, with big round eyes. She's always wearing red lipstick and a thick layer of eyeliner.
In Hogback's flashback, she is seen as a child. While her crown is visible, the rest of her outfit is hard to see, however she seemed to be wearing a dress that gave her a childish appearance.
Personality : Perona is confident and firm with herself. She dislikes people telling her what to do and dislikes anyone disobeying her will. She was even willing to put Absalom in his place and remind him of where her authority lies on Thriller Bark. Despite this, she is normally loyal to Gecko Moria and apparently sees him as a way of protection, as she is seen crying to rejoin him. In the manga, she normally speaks using a very masculine language, despite her looks. After Zoro appears, she tends to his wounds, displaying a willingness to befriend even those she sees as a foe. It also shows that she is not completely incapable of being kind to others, despite how cruel she can seem at times.
She apparently likes 'cute' creatures and will only allow someone to work for her if they are cute. Her dream is to create a country where all the 'cute' people are turned into zombie animals that obey only her. She disliked Kumashi because, although he is cute in appearance, his voice is not, and thus she prefers him to just be quiet. Her desire for cute things gives her a slight childish outlook on some issues. She is very playful, threatening to burst Usopp's heart when she was in her ghost form. Usopp nearly died of the fear itself, and got enraged when Perona simply laughed it off, saying she could do no such thing.
She seems to be terrified of cockroaches, even to the point of screaming in fear and believing that plastic cockroaches are real ones. Also, she seems somewhat naive, not doubting for a second that Usopp can lift ten tons.
Like many of the One Piece cast, she has her own unique laugh that use the word Horo. (i.e Horo-horo-horo-horo-horo!)
http://onepiece.wikia.com/wiki/Perona