Biscuit Oliva - A giant and muscular man, Biscuit Oliva was first seen in the anime at the end of the second season where he was despatched by the USA to fight Yujiro Hanma. After fighting his way through groups of drug cartel mercenaries he encounters Yujiro at the leader's mansion and proceed's to kill the cartel's leader, before trying to engage Yujiro in combat. However Yujiro surprises him with a front kick that knocks him several feet back and allows Yujiro to make a get away. As Yujiro leaves he tells Biscuit that he is not yet ready to eat, prompting Oliva to smile as he realises that Yujiro is going to become more powerful.

In the New Grappler Baki manga, he has a showdown with Baki in the Arizona state prison, and is defeated after a brutal match of strength and, in it's sequel "Son of Ogre" He is later easily defeated by Yujiro.

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