Psyphon

Psyphon (possibly a play on "siphon", meaning drain or leach, due to his aid in draining the heroes of the conquered worlds) serves as Vilgax's servant and right hand man. He is extremely loyal to Vilgax and follows his will completely. He has a skeletal appearance and helps Vilgax to drain all the powers of the heroes of the 10 worlds he had conquered (Dwayne McDuffie confirmed one of these worlds was his home planet). Still nothing much is known about Psyphon except for the fact that he appears devoted to Vilgax and he also shows sign of arrogance towards humans.

Appearance
Psyphon has a resemblance to a To'kustar. He has a skeletal appearance. His body is white with black markings and he wears a black robe with red marks in the middle.

Powers and Abilities
Psyphon possesses no natural powers, but has advanced technology far beyond Earth standards.

During the episode Vengeance of Vilgax: Part 1 when the police attack him, Psyphon stops the attack by pressing a button on his wrist and a force field appears. He then throws a grenade at the police and detonates it, destroying everything within its large blast radius.

In the Vilgax Attacks game, his abilities range from orbital lasers to force fields to energy attacks and grenades. He was also able to bring a Mr. Smoothie drawing to life with a laser and make it into the boss in the level.

In Reflected Glory, Psyphon claimed after Vilgax was blown up, he "wouldn't let all that power go to waste", exhibiting levitation, and enhanced strength, being stronger than Ultimate Spidermonkey. He also reveals he has a mass amount of R.E.Ds.

Vilgax Attacks
Psyphon made an appearance in the game Vilgax Attacks as a mini boss and is met by Ben on the rooftops in Bellwood. He attacks with missiles and uses a shield to defend. After being defeated he brings the Mr. Smoothy sign to life. At the end of the game, he was sent into the Null Void with Vilgax by Alien X. At the end of the game he also reveals that Vilgax beamed him back abord his ship after Ben defeated him.

Cosmic Destruction
Psyphon appears in Cosmic Destruction where he serves Evil Way Big/Albedo. He mentioned the reason why he decided to leave Vilgax, which was because he wanted to serve the most powerful, but he could just have been flattering Evil Way Big. He mentioned considering working for Aggregor, but Aggregor said he worked alone, and Psyphon said "and look where that got him". Evil Way Big interpreted Psyphon's comment that he couldn't be trusted and kept him around only because of his usefulness, first with his army of R.E.D.s, later by brain washing Cooper to attack Ben and retreive the Potis Altiare, and finally holding off Ben himself. In the DS Version, Ben encounters Psyphon at the Robotics Lab in Tokyo.

Masters

 * Vilgax
 * Evil Way Big/Albedo (Cosmic Destruction)

Alien Force
He appears in Vengeance of Vilgax helping Vilgax absorb Ultimos' powers and coming to Earth with Vilgax so he could challenge Ben to a fight. He fended off some police officers with a button on his watch and placing a bomb if Ben would not show up. Ben even asked if Psyphon will work for him if he won.

Psyphon also appeared briefly at the beginning of Primus, and made a non-speaking cameo at the end of The Secret of Chromastone, handing a tissue to Vilgax, having caught Ben's cold. According to Dwayne McDuffie, during the Final Battle, he was tending to Vilgax's empire.

Ultimate Alien
His first appearance in the series is Reflected Glory, where he is the main villain and wants to avenge his master's defeat by destroying Cash and J.T. He then realizes they were not the brains behind Ben so he goes and attacks Ben. He is now stronger than in the Alien Force series, he took some of Vilgax's equipment and he has now almost indestructible assassination droids called R.E.D.s. He also managed to defeat Ultimate Spidermonkey, marking him the first villain to defeat an ultimate form, something not even his master could do. In the end he was defeated by Cash and JT when they shot a energy decoupler at him, weakening him, allowing Ultimate Spidermonkey to knock him out with a single weak punch.

Alien Force

 * Vengeance of Vilgax: Part 1 (First appearance)
 * Vengeance of Vilgax: Part 2
 * Primus
 * The Secret of Chromastone

Ultimate Alien

 * Reflected Glory (First reappearance)

Quotes

 * I will destroy you, Completely!
 * Meet my R.E.D.s!

Trivia

 * Psyphon claims he only serves the strongest and abandons his master when he gets overpowered though he did not do so with Vilgax when in Alien Force series despite Ben beating him with Diamondhead in Vengeance of Vilgax and Way Big in Primus, even when Vilgax was defeated, he still showed signs of loyalty in Ultimate Alien.
 * Psyphon is one of seven villains (as well as the first) to defeat an Ultimate, the second being Aggregor in Perplexahedron and The Forge of Creation, the third being Kevin in The Enemy of My Enemy, the fourth being Sunder in The Transmogrification of Eunice, the fifth being Dr. Vicktor in Viktor: The Spoils, the sixth being Dr. Animo in It's Not Easy Being Gwen, and the seventh being Eon in Ben 10,000 Returns.
 * Though he served Vilgax loyally, Psyphon was not above goading him every once in a while.