Psyphon's History
Psyphon is/was Vilgax's servant and right-hand man. He is and will always be extremely loyal to Vilgax following his will completely.
He runs his own operations as of Omniverse.
Psyphon helped Vilgax drain all the powers of the heroes of the 10 worlds he had conquered (one of these worlds being his own home planet).
Alien Force
He first appears in Vengeance of Vilgax, helping Vilgax absorb Ultimos' powers with his power-absorbing machine and came 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 placed a bomb if Ben would not show up. Ben even asked if Psyphon would 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, who had caught Ben's cold.
During the events of The Final Battle, Psyphon was tending to Vilgax's empire.
Ultimate Alien
His first reappearance 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 battles 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 J.T. when they shot an energy decoupler at him, weakening him, allowing Ultimate Spidermonkey to knock him out with a single weak punch.
In The Ultimate Enemy: Part 1, Psyphon arrived near the end of the episode with the machine used to take the powers of Vilgax's enemies and insert them into Vilgax. Then, as he prepares to fight Ben and his team, Dagon is released.
In The Ultimate Enemy: Part 2, Psyphon uses the machine to absorb Dagon and transfers it to Vilgax.
Omniverse
Psyphon reappeared in The More Things Change: Part 2. He now runs his own operations, like a protection racket on alien markets in Bellwood and Undertown, threatening to blow them up with bombs and accepting only Taydenite as payment. He plots to expand the protection racket to the human stores in Bellwood and since they lack the Taydenite to pay him, this will result in dozens of bombs going off in Bellwood, which is his intent
During the battle with Ben, he demonstrated a device designed to overload the nervous systems of aliens, thus causing them to lose control of their powers. Psyphon and Ben were separated by Buglizard and instead fought Ben's new partner, a Revonnahgander named Rook Blonko. During the resulting fight with Rook, Psyphon developed a lustful craving for Rook's Proto-Tech Armor, wanting its technology. He lost the fight because a scaffolding fell on top of him when he was trying to hit Rook with his eye beams.
He and his gang are arrested by the Plumbers at the end of the episode and imprisoned inside the Plumber's base underneath Max's store.
He later appears in Outbreak, where after Dr. Psychobos steals a vital stabilizer chip from the Omnitrix, he is transformed into a half Pyronite creature along with his gang Liam, Fistina, and Bubble Helmet, who are transformed into half a Vaxasaurian, half a Galvanic Mechamorph, and half a Gimlinopithecus respectively.
He then devised a plan to escape from the Plumber's prison. First, he allowed his three superpowered minions to attempt a direct escape, buying him time to hack the base's Null Void gate and commit the full power of the base to it, thus threatening to suck Bellwood into the Null Void. He knew that the Plumbers would shut down the gate, and in doing so they also deactivated the secondary security field that was trapping him and his minions in the base.
Luckily, Blukic and Driba were able to fix Ben's Omnitrix, returning those affected by it back to normal, much to Psyphon's chagrin, and caused him and his minions to be re-imprisoned in the base.
In Special Delivery, he wanted to auction a package that contained the Dwarf Star in a containment sphere. He attached it to his own suit and defeated Ben as Humungousaur, but Ben later defeated him as Toepick.
In Mud Is Thicker Than Water, he stole Plumber technology with the help of his spy, Gorvan. His plans were ruined when he realized that Liam, was actually Lucy Mann. He was quickly defeated by Crashhopper.
In Bengeance Is Mine, he believed he had been reunited with VIlgax, though it was actually Bill Gacks. He did everything for him, even robbed a bank (what Bill never asked). He encounters some Squid Monsters and realizes that he can control them. He was fooled by Bill who, using an ID Mask pretended to be Vilgax. At the end of the episode, he was trapped in a pipe by Snare-oh.
Three days before the events of Cough It Up, he tried to rob a truck that was transporting a dangerous weapon but was preceded by Argit. He hired bounty hunters to get Argit for him, with the retriever receiving double the reward. At the Black Hole, after SevenSeven took Argit, he threatened him to hand over the dehydrated Techadon army. Argit swallowed the cube, which made Psyphon incredibly desperate and angry. Argit wanted to get the cube out of his body and Psyphon was about to do it with pleasure. Ben, knowing Psyphon's weakness, transformed into Toepick, which made Psyphon faint. Soon after, he and his minions are banned from Undertown.
