Aokiji was the former Admiral of the Marines and was the first Admiral to be shown in the One Piece series. He can use two types of Haki and he possesses a Logia type of Devil Fruit. The name of his Devil Fruit is Hei Hei no Mi which allows him to create and control Ice. Aokiji can freeze the entire sea within seconds. Aokiji was able to fight against Jozu of the Whitebeard Pirates who was pretty powerful himsef. He also fought with Akainu for 10 days and 10 nights which shows us how powerful he is. Moreover, even the Gorosei knows strength of Aokiji and called him an enormous power.
Kizaru is one of the three Admirals of the Navy and he was first introduced at Sabaody Archipelago. He possesses a Logia type of Devil Fruit called Pika Pika no Mi which allows him to manipulate light itself. With this Devil Fruit Kizaru can shoot laser beams, create a sword made of light and he can also travel at the speed of light. Kizaru’s laser enhanced kicks can destroy an entire mangrove and tear through flesh like it were paper. Kizaru was able to fight and overpower four supernovas at once with ease. Also, he fought toe to toe with Silvers Rayleigh. At Marineford, he fought against the first Division Commander of the Whitebeard Pirates, Marco.
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