Berserker ia a street fighter and the 2° Fist of Ragnarok.
Berserker is a minor villain of the anime/manga series History's Strongest Disciple Kenichi, created by Syun Matsuena. Berserker first appeared as a silhouette in History's Strongest Disciple Kenichi Volume 06, CH. 048 "8 Fist Heroes", and his first anime appearance was in History's Strongest Disciple Kenichi - Episode 19 "Ragnarok's strongest! The Arrival of the 8th fists!". His character in the Japanese series is voiced by Jouji Nakata, and the U.S. dub produced by FUNimation is done by Robert McCollum.
Berserker is a tall, heavily-built young man with wavy hair and jagged eyebrows. He usually wears jeans and a distinctive sleeveless red jacket with crosses on it.
A physical prodigy to whom virtually everything came easily to, Berserker's greatest obstacle has always been boredom. As virtually nothing could challenge him, virtually nothing could hold his interest either. He has always had a certain intrigue for powerful fighters, or those warriors who had unusual traits however. Berserker seems something of a cold and aloof type, his more destructive actions rarely seem motivated by maliciousness, but rather apathy, as he doesn't appear bothered by the prospect of harming others to alleviate his boredom, or under orders.
He was personally recruited into the Ragnarok gang by its leader Odin. Berserker also has something of a competitive streak.
Despite never having studied any formal martial arts style, or ever been instructed in any way of fighting, Berserker is a brawler of incredible prowess. He possesses the sort of reflexes, athleticism and skill that people who practiced fighting arts professionally would kill for. He has managed to fight atop a thin fence edge without difficulty, saw a professional boxers punch come at him and not only perceive and be able to dodge it, but to change his mind about which doirection to avoid it to set up a better attack next. On top of this all, his large frame gives him considerable strength and endurance.
Despite what his usually placid demeanour might suggest Berserker is not a fighter of the calm, "Sei" class, but rather belongs to the opposite "Dou" disciple. He is capable of inducing a state of intensified adrenaline within himself which allows him to attack more frequently and with more of his strength while ignoring pain and injury.