Mistaké

Mystake is a minor character in LEGO Ninjago: Masters of Spinjitzu. She is an elderly woman who owns a tea shop on the outskirts of Ninjago City.

Spellbound (Flashback)
Following the end of the Serpentine Wars, Mystake was part of the council that ordered the banishment of the Anacondrai generals to the Cursed Realm.

Tick Tock
Sensei Wu visited her shop, requesting Traveler's Tea. At first she claimed not to have heard of it, but upon receiving payment, brought the tea out from behind the counter, warning him of the consequences.

Day of The Great Devourer
Lord Garmadon entered Mystake's shop, asking for Traveler's Tea. She told him that only a fool would request the tea, but after realizing that his request was serious, she changed her mind and went to retrieve some from the back of the shop.

Child's Play
When the Ninja were reduced to children and menaced by a resurrected Grundle, Sensei Wu and Nya went to Mystake's shop with a request for Tomorrow's Tea. When she went to check her supply in the back, she was unable to pinpoint the tea's location. As a result, Nya and Sensei Wu were forced to rush to the Ninja's aid upon finally retrieving Tomorrow's Tea.

Trivia

 * Her name is a play on the word "Mistake."