Ultra Violet is a major antagonist in the Ninjago franchise, serving as one of the three secondary antagonists (alongsideof Season 9, one of the tertiary antagonists in Season 10, a minor character in Season 11 and a supporting character in season 15. Ultra joined the cult that worshiped Garmadon, and she believed that he was the savior of Ninjago City after he defeated the Great Devourer with the four Golden Weapons of Spinjitzu. The group successfully resurrected Garmadon but only his Oni side. Starting in "Big Trouble, Little Ninjago", Killow, Ultra Violet and the Sons of Garmadon terrorized the citizens of Ninjago as Garmadon ruled with an iron fist. She attempted to apprehend both Lloyd and Nya twice, but in her third attempt, she was defeated by Zane.
After Lord Garmadon's defeat at the hands of his son, Lloyd Garmadon, Violet was arrested and thrown in Kryptarium Prison for her crimes. When the Ninja went on a rescue mission to save Zane Julian from the Never-Realm, Violet, the Mechanic and Fugi-Dove tempted to break out only to apprehended by Pixal AKA Samurai X. She later sided with the Ninja in order to defeat the Crystal King and his Council which was ironically led by ultraviolets former boss, Harumi.