The henchmen are a gang of thugs who work for some of the villains that live in Ninjago. While working for Unagami, the Mechanic recruited the henchmen to work for him so they could help Unagami build a portal to Ninjago. After the attack by Unagami, they found themselves on a wanted list, so they joined Ronin and began robbing the Keepers of their valuables. However, they were stopped by the ninja. They then helped Miss Demeanor smuggle Vengestone. After an encounter with the ninja and the New Ninja in the N line, they were defeated and arrested.
The henchmen are seen admiring the new upgrades on the Noodle Truck of Crime. The Mechanic agrees and attempts to show them a noodle dispenser; however, his robo-arm can't press the button. One of the henchmen presses it for him, and the Mechanic gets upset by splashing the noodles on him.
The Mechanic and his henchmen invade an unknown warehouse to find the Prime Empire motherboard. They discover it, but the ninja catch them in the act. The Mechanic's henchmen then fight for possession of the motherboard before The Mechanic is able to grab it and escape.
Some of the henchmen head to the hangar bay and disguise themselves as Zane. Wu realizes this and fights the looters, but he passes out after gas is dropped by one of the henchmen.
Meanwhile, the other henchmen are building the Manifestation Gate to bring Unagami from Prime Empire. When they completed the gate, they hook up Zane to the gate as a power source and the Mechanic turns on the gate. Later, P.I.X.A.L. arrives and fights some of the henchmen. As the gateway becomes stronger, some of the henchmen flee from the glowing light.
The henchmen are seen ironically running away from the Manifestation Gate. Some time later, two henchmen are driving a truck before the Empire Dragon approaches them. Luckily, Jay distracts the dragon and fights it.
When the fake Wojira kidnapped Jay, several henchmen piloted the ship that carried him to the bay. When attacked by the ninja, they fought them, but were defeated. While some remained in prison in the Keepers' Village, others managed to escape.
The henchmen and Miss Demeanor used trucks to get to an anonymous buyer in the rice fields near the farmers' village, but they were deceived and attacked by the ninja. The henchmen then fought them, and although the ninja were winning, when Nya created a water tornado that she could not stop, the henchmen managed to escape.
Miss Demeanor and her henchmen met up with a Vengestone seller for another shipment of vengestone. Unfortunately, the henchmen were attacked and quickly defeated by the New Ninja and were turned over to the police.
Miss Demeanor and her henchmen arrived at the old N line tunnel to meet up with their newest vengestone supplier. Upon arrival, they encountered the ninja, leading to a fight between the two parties. Although the henchmen were able to hold their own thanks to the Ninja being out of shape and practice, the arrival of the New Ninja quickly turned the table, resulting in Miss Demeanor and her henchmen being defeated and subsequently arrested.
The t-shirt design from the Street Skater's torso depicts part of the Middlesbrough Transporter Bridge from the hometown of the designer, Michael Patton.[1]
Cece is the only known female henchman as well as the only named henchmen, although she is non-canon for the show.
The henchmen are the fourth faction to be the villainous faction more than once, with them being one of the villainous factions of Prime Empire and being a part of Ronin's criminal group alongside the Kryptarium inmates in The Island.