Wu

"Patience..."

Sensei Wu to Kai.

Backround
Sensei Wu has trained four ninjas, Kai, Cole, Zane, and Jay to do Spinjitzu. He is a wise old man who is the brother to Lord Garmadon and son to the first Spinjitzu Master. He hid the four Golden Weapons and placed a dragon guardian over each one to keep them safe from Lord Garmadon. He is also the only person other than the first master of Spinjitzu to attain every element of Spinjitzu.

In episode 1 of Ninjago: Rise of the Snakes, he teaches the four ninjas about unlocking their full potential. Zane is the only one to have accomplished this so far.

In episode 7, he goes through the same portal that Lord Garmadon went through to try and get help from him. At the end of the episode, it shows Sensei Wu and Lord Garmadon in his transformed mode.

Appearance
He wears a straw hat, has a long white beard, and has thick, white eyebrows. He also has 2 kimonos: one that is black with white sleeves and gold Japanese signs, and one that is all white.

Trivia

 * There is a running gag in the movie involving him drinking tea at the most unexpected times (eg: on a mountaintop, on the roof of a building, underwater, falling to death etc).
 * In LEGO Universe before the Ninjago Monastery World was created, Sensei Wu was in Crux Prime. Now that the Ninjago World has been created, Neido has taken Sensei's place in Crux Prime.
 * Sensei Wu has never taken his hat off, not even when he sleeps.