Dareth

 Dareth, or Grand Sensei Dareth '''as he proclaimed, is a minor character who's the owner of the Mojo Dojo. Dareth wants to be the Brown Ninja.

Pirates Vs. Ninja
The Ninja were looking for a suitable place to train Lloyd, and had no other choice but to enter the Mojo Dojo. Dareth came in a snob-like fashion and said that if they could overthrow him in a battle, he would allow them to train in the dojo. The Ninja won, and he let them train in the dojo. He then tried to prove he was stronger than Lloyd by claiming he could break 50 planks, then later asking if he could join the Ninja and become "The Brown Ninja," but in the end all he did was humiliate himself.

While the pirates attacked the city, Dareth jumped on the ship and attempted to fight the pirates, but instead, he was tied up and held as prisoner. When the Ninja disguised themselves and went aboard, Dareth was forced to walk off the plank, but was saved by The Ultra Dragon, and was given the misconception that he had "called the dragon." After the pirates were arrested and Garmadon escaped, Dareth tried one final time to outwit the Ninja, and finally join their team, so he attempted to attack Jay, but was easily outsmarted. He apologized to the Ninja for aggrandizing his actions and how he was being an extremely irritating braggart. He was forgiven, and everyone ended up laughing.

Ninjaball Run
In Ninjaball Run, Dareth's Dojo is going to be destroyed by a fake company created by Lord Garmadon called "Darnagom Enterprises." Without the Dojo, the Ninja have no place to train Lloyd. Nya informed them about them about Ninjaball Run, a racing competition which will earn enough money to save the Dojo. The Ninja enter the competition with the Ultra Sonic Raider, and Lloyd enters with the Ultra Dragon. Dareth, Sensei Wu, and Nya watch from the sidelines. Throughout the race, Dareth informs the others he "can't watch" and covers his eyes in horror. Throughout the middle of the race, Dareth proclaims to the Announcers that without the Dojo, he'll have no place to train his students and "enrich their tiny little lives." The crowd then starts cheering for the Ninja, and the Ninja win the race. Dareth jumps in the trophy full of money and the Dojo is saved.