Dark Mayhem

Dark Mayhem is the arch enemy of the Thunderman family. He is voiced by Jamieson Price but is portrayed by Omid Zader

The Thunderman's
Dark Mayhem was idolized by Max, the oldest son of the family.

His power has brainwashed his older twin sister, Phoebe. Once physically and another time accidentally inputting his powers in her.

During the latter, she met his old sidekick, Destructo, and planned to wipe super powers from the world, but were stopped by her family.

Without his powers, the prisoners were defenseless against the Z-force in a final assault in The Thunder Games.

Galaxy Squad
When General Magnator selected Phoebe to become Shogun Black (II), she decided to try and free Dark Mayhem and the rest of the Z-force's rouges gallery to assist The Shogun in finishing their conquest.

However, like the last time, she joined her family and the rest of the Galaxy Squad in destroying The Shogun. Despite the hard fight, he was able to steal Henry and the Thunderman's powers.

Thunder Gap
Destructo and Dark Mayhem fled to Onyx, a safe haven for villains and their subordinates. Here, they met Count Mysterio, a bad hombre that can turn where he stands from a lawless furnace to bone breaking cold. They traded their powers to get a Devil Sloop ship and set to Planet Denzi to revive the last members of the Indaver Clan, Mirror and Teller. They also found the monsters who had taken over the abandoned planet, the gollems, and took them under their control. On that planet, the five created the Iron Blade Conference, and with a contract that must be spoken by new members during their initiation.

Hexagon
Mysterio already had allies across the universe, the collators, and sent them to Earth. Another, a good friend of his, was back on Onyx. She took their plea, but got chased to Earth by the Galactic Knights, headed by the former Cerberus Ranger, Jr Commander Terrance Oursan.