More commonly known by his alias Kizaru (Yellow Monkey), he is the only remaining marine admiral of the previous generation after the timeskip.
He is calm and cool-headed, even in tense situations, such as when Basil Hawkins appeared unharmed by his attack, or when Silvers Rayleigh appeared. Kizaru even decided to apprehend Silvers Rayleigh, who had retired from piracy over twenty years earlier, simply because, as a member of the Roger Pirates, his crimes could not be forgiven. Following the events of the Sabaody Archipelago, Kizaru arrested 500 pirates.
When Luffy was launched towards the execution platform and stood before all three admirals, Kizaru commented that this youth was "scary". The most recent occurrence was when Benn Beckman aimed a gun at him, although in that case Kizaru said it sarcastically and still succeeded in getting in an attack while Beckman was shocked that he was not done yet. Since Kizaru always delivers such admissions of fear with an expression on his face and his usual tone of voice, it is never clear if he is mocking his opponents or if he is being serious.
Kizaru has shown considerable skill with a sword of light produced by his Devil Fruit that can stand up to heavy Haki based attacks, as he is able to duel Silvers Rayleigh to a draw despite his loss of intangibility.
Trivia
His name and other admiral names (Aokiji, Akainu, and Kizaru), are taken from Momotaro legends (Momotaro met Pheasant, Dog, and Monkey as friends to accompany him on his journey).