北海道マスター

The Hokkaido Master (his own title), collectively 北海道マスター was the second Sensei master. (2番目の先生のマスター. ) He continued training ninjas after The Three Masters. His name is Hokkaido, surname is unknown.

Background
At the age of 7, he was sent to the Dojo by his parents to become a ninja. He trained really hard, as his ambition was to become the master of Ninjas, known as the Sensei. He achieved that, but he really trained hard to earn that title. After about 6 months of training, Watersei noticed his talent, and decided to teach him personally. He became the master of water, and he mostly enjoyed fighting with using it. Finally, at the age of 22, he became the master of ninjas. He was a good master, and taught a lot of ninjas well. He lived for over 100 years. A week before his death, he chose an other master. He is the only Sensei, whose grave's location is unknown.

Involvement
He is often noticed as the most mysterious ninja, as nobody has seen its' ghost.

Trivia

 * His grave is probably located somewhere on Club Penguin Island.
 * His successor (Ninja training) wasn't experienced, and by accident destroyed the dojo.
 * He loved haiku and japanese.