Berserker (Kenichi) is the Second Fist of Ragnarok. He is often seen chewing bubble gum and hardly ever speaks. He has a calm disposition despite all the damage being done to Ragnarok and almost never loses his head, despite his seemingly ill-named position. Berserker is said to be the most fearsome fighter in all of Ragnarok, and Loki even believes that he could be a better First Fist than Odin (though Loki may have simply
said it in order to plant a seed of betrayal in Berserker). However, Berserker shows no interest in becoming a leader for any gang, and is actually afraid of fighting Odin, believing that the latter is much stronger than he is. Berserker claims to fear boredom more than losing during his match against Hermit.
Berserker is told by Loki to lead his "New Eight Fists" once the latter proclaims his betrayal of Ragnarok during the attack on Shinpaku Alliance. However once he got close enough, he quickly defeated them all, including Loki, and claims that he only came to Loki just to get closer to attack. He is subsequently challenged by Hermit, who became angry that Berserker took out Loki when he was going to do it. At the beginning of the battle, Berserker's foresight is unable to overcome Hermit's ability to land attacks, forcing him to use odd techniques to counter him. When Hermit gets around those attacks as well, Berserker finally goes into Berserker Mode and overwhelms Hermit. Ultimately, he is defeated by Hermit, who twists one of his arms and unleashes a multitude of devastating attacks. Berserker is unwilling to admit defeat and attempts to continue on, despite his injuries, but is dissuaded by Kenichi, who tells him that one should not be ashamed of defeat because one learns more from it. Berserker then stops trying to fight, warns Kenichi about Odin, and is finished off by the First Fist.
Berserker's current whereabouts are unknown, but implied to be in YOMI, as he is shown standing amongst three people whom Kensei picked out for disciple testing.