Psyphon makes his debut in the episode "Ultimate Glory". Psyphon makes a cameo in "The Secret of Chromastone", giving Vilgax a tissue after he caught Ben's cold. Vilgax then remembers what Zs'Skayr told him earlier about Primus.
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In "Primus", Psyphon is seen on Vilgaxia giving Vilgax advice about how to take Ben down. After Vilgax is defeated by Diamondhead and is ordered to leave Earth at once, Psyphon shuts off the force field and the two leave. In "Vengeance of Vilgax: Part 2", Psyphon is seen standing next to Villgax waiting for Ben to arrive when Jetray flies into battle. Vilgax tells Psyphon not use the power-draining machine on them for he only wants the Omnitrix, deciding to use them as a message to Ben. Later, Psyphon appears after Vilgax defeated the Plumbers' Helpers. When Vilgax teleports in, Psyphon bows down to him and calls him: "Conqueror of Ten Worlds". He then travels to Earth where he creates a force field around central park, even forcing a missile onto one of the officers that tried to shoot him. Psyphon first appears in "Vengeance of Vilgax: Part 1", where he helps Vilgax in absorbing Ultimos' powers.
![ben 10 vilgax attacks first boss battle ben 10 vilgax attacks first boss battle](https://images-wixmp-ed30a86b8c4ca887773594c2.wixmp.com/i/45d6e147-743c-42b5-b408-ccbf427d5d83/demrs91-803e2834-dd20-4332-bda8-e0d6ed6b7228.png)
![ben 10 vilgax attacks first boss battle ben 10 vilgax attacks first boss battle](https://static.wikia.nocookie.net/ben10/images/e/e7/Vilgax-OV.png)
Also, his voice has gotten deeper and more raiser. He has spikes on his hands and a mark on his chin.
![ben 10 vilgax attacks first boss battle ben 10 vilgax attacks first boss battle](https://static.wikia.nocookie.net/ben10/images/4/40/Alien_Force_Vilgax_Ultimos.png)
In Ben 10: Omniverse, he is even more skeletal than before. His body is white and he wears a black with a red stripe in the middle. Psyphon has a skeletal appearance similar to a To'kustar.