Ben 10 Planet

Encephalonus IV

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Encephalonus IV is the home planet of the Cerebrocrustaceans, the Cyber Squids and the Vicetopus.

Landscape, Technology and Weather

Vilgax Attacks Timeline

Encephalonus IV AFVADS

Encephalonus IV in Vilgax Attacks DS

Encephalonus IV is a large planet filled with massive towers and facilities built upon rocky mountains and canyons. Coral can be seen on rock walls and mountainsides.

The buildings' interiors are mostly filled with dark rooms, long corridors, bridges and computers.

Technology present on Encephalonus IV is very futuristic and advanced, in accordance to the fact that Cerebrocrustaceans have extremely high intelligence. Most of the machinery and transportations present include jet-powered, interchanging platforms; laser beams used to activate switches that open doors, or turn on other machinery; high-speed subway trains that are powered by electrical coils; numerous satellites and pylons, plus advanced computer systems.

It is suggested that the numerous puzzles and computers present on Encephalonus IV are used to test the knowledge of the Cerebrocrustaceans, and it is a daily thing in everyday life to exercise their brains.

Lightning and thunder are frequently roaring in the dark, cloudy sky, though rain has not been seen.

Main Timeline

Of Predator part1 50

Inside Dr. Psychobos lab.

Encephalonus IV is very different from how it is in the Vilgax Attacks timeline. The tall mountains are replaced with tall trees instead, and the sky is more greenish than dark blue.


Main Timeline

Encephalonus IV was seen in Of Predators and Prey: Part 1 when Malware visited Dr. Psychobos.

Vilgax Attacks Timeline

Encephalonus IV is the fourth level in Ben 10 Alien Force: Vilgax Attacks.

Notable Inhabitants

Notable Visitors


The name of the planet comes from the word "encephalon", meaning "brain".


  • Encephalonus IV has at least two moons.

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