In the episode X = Ben + 2, Sevenseven kidnapped Attea, the daughter of the Incursean emperor Milleous, and held her for ransom. When the ransom was paid, however, Attea offered him twice as much to help her overthrow her father. During a fight with Swampfire, Sevenseven's helmet was damaged, forcing him to retreat.
He reappeared in Hit 'Em Where They Live, teaming up with Zombozo, Charmcaster, and Vulkanus to take revenge on Ben. He was seen targeting Sandra Tennyson, but fought Max Tennyson instead when he showed up. He ended up flying away when Max stuck a knife into his jetpack, causing it to malfunction.
In Vilgax Must Croak, he was hired by the Incurseans along with Sixsix and their sister Eighteight to kill Vilgax. The three of them, along with Attea, were defeated by Vilgax in moments when they were finally able to confront him directly.
In Cough It Up, he along with his siblings was hired by Psyphon to get him a precious item. They found Argit (who had the weapon) and fought for it with Ben, Rook and Spanner. Sevenseven defeated Buzzshock and shot Rook in order to get out with Argit. Later, he fought against Rook. At the end of the episode he got banned from Undertown.
Powers and Abilities
Sevenseven is like a non-mutant cyborg, but it can be seen that he was experimented on, as he had nano-robots infused into his hands so they could transform them into weapons, like some androids do. He can transform both of his hands into cannons that fire laser discs, energy beams, and laser machine gun bullets. He also has a buzz-saw, and wire cannons that fire laser discs and machine gun lasers, discs, and turrets that fire lasers and energy saws and homing heat-seeking missiles, grenades, retractable energy brass knuckles that can stop a rolling Arburian Pelarota and short-range flash-bang grenades.
Like his siblings, he does not speak English, even if he talks to aliens who do, but they are shown to be able to understand him.
Ben 10: Alien Force
- X = Ben + 2 (first appearance)
Ben 10: Ultimate Alien
Ben 10: Omniverse
Cartoon Network Action Packs
- Beauty and the Ben
- The Monster at the End of This Book
- Wanted: Kevin Levin
Sevenseven appears in the video game Ben 10 Ultimate Alien: Cosmic Destruction on the Devil's Peak level, part 2. He is one of the bounty hunters hired by the Evil Way Big to take the Potis Altiare, an alien artifact created by Azmuth's ancestors that can upgrade the Ultimatrix. After an attempt to defeat Ben by shooting him, he fights Ben himself but is easily defeated, but he escapes. In the DS Version, Ben encounters him at the top of the Great Wall of China.
- According to Derrick J. Wyatt, Sevenseven was not redesigned in Omniverse because Derrick himself had designed him for Alien Force.
- In an extended episode of Ben 10, it is mentioned that Sevenseven is Sixsix's older brother, although Sevenseven isn't genetically mutated like Sixsix is, as he has dark grey skin and black-and-white eyes, and not light grey skin and robotic eyes, like Sixsix.