Miu's grandfather and the undefeated elder of the Ryouzanpaku Dojo, who is said to have beaten 500 Shaolin masters to near death. His kicks have speeds that are still a blur even when viewing a replay of it at 1/1000 of the normal speed. If necessary, he is able to intimidate the other masters in order to maintain peace. Even using just 0.0002% of his power, he can easily overwhelm both Ken'ichi and Miu at the same time and rip a tree in half.

From wimp to warrior. Sort of… 
 
Yeah, Kenichi’s a total wimp. He’s always getting picked on and doesn’t have a lot of friends to stick up for him. The guy needs motivation if he hopes to graduate in one piece. Well, Miu’s the perfect motivation. She’s hot, she accepts him, and she just so happens to live at a dojo with six martial arts masters. You could say fate has led Kenichi to their door, or you could say he was just following the hottie. Either way, he’s about to get whipped into serious shape. If he can survive some hard-core training, he might survive another day at school. He might even score with Miu. Yeah, you could call Kenichi a wimp. But let’s go with underdog instead. 
 
(Source: Discotek)

<a href="https://twitter.com/conde_jesse/">Twitter</a>

Jesse Conde Pedrero Pérez is a Mexican voice actor known for being the Latin American Spanish voice of Mr. Potato Head in the Toy Story franchise, Tigger in Winnie Pooh and the Green Goblin in the Spiderman movies.
He was the recurring dub voice of Stan Lee.

Non-Anime Roles: 
- Franklin (Gears of War)
- Scarecrow / Jonathan Crane (Batman: Arkham Knight and Injustice 2)
- Olaf / Shaco / Trundle (League of Legends)

OVAs of History's Strongest Disciple Kenichi bundled with volumes 46, 47, 49, 53, 54, 55, & 56 of the manga.

The story is focused on Kenichi Shirahama, an average 15-year-old weakling, whose life turns to Hell with the appearance of the naive, beautiful, and strong transfer student, Miu Fūrinji. After Kenichi witnesses Miu's skills in martial arts, he joins the Ryōzanpaku dojo, the gathering place of those who are truly strong, which also happens to be Miu's home. After beating a karate student in a match, he is soon targeted by all the delinquents in the school. Since then, Kenichi's routine is divided between his hellish training with the masters of Ryōzanpaku, and his fights against the members of Ragnarok, a gang who views him as either a possible ally or an impending threat to their plans. 
(Source: Wikipedia)

Tatakae! Ryouzanpaku Shijou Saikyou no Deshi, relates the story of a peaceful yet weak boy, who one day, after being beaten up really bad by some of his school comrades, decides that being bullied around isn't an option anymore. Seeking revenge on his bullies, the young boy, Shirahama Kenichi, decides to join a fighting dojo. But what he doesn't know is that the dojo he wants to join is actually a place of gathering for those who have mastered different types of fighting styles. Thus begins his journey... 

Hayato Fuurinji