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34497a3fe0ef52949a1ba8e99894ed69 This article belongs to the Classic Continuity

Encephalonus IV is the home planet of the Cerebrocrustaceans[merch 1] and the Vicetopus.


Prime Timeline[]


Inside Dr. Psychobos lab

Encephalonus IV has tall trees and a greenish sky.

Ben 10 Alien Force: Vilgax Attacks[]

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 with 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.

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


Prime Timeline[]


The nearby planets of Encephalonus I, II and III, which share a sun with Encephalonus IV, comprising their own solar system, have long been depleted of their own natural electrical resources by the predecessors of the Cerebrocrustaceans. Learning from the mistakes of their ancestors and determined not to repeat past disastrous errors, the Cerebrocrustaceans have evolved to be able to generate their own electrical storms using only the power of their minds, contributing to their homeworld, rather than depleting it.[merch 2]


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

Ben 10 Alien Force: Vilgax Attacks[]

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

Known Inhabitants[]

Ben 10 Alien Force: Vilgax Attacks[]

Known Visitors[]



Season 1[]

Season 4[]

Video Games[]

Alien Force[]


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


  • Encephalonus IV has at least two moons.[1]
  • Originally, Encephalonus IV was a gray, cloud-covered planet with lightning bolts constantly ripping through the sky in an unending electrical storm of spectacular cumulonimbus activity unrivaled by any in the universe.[merch 2] These storms were the main source of power for the planet.[merch 3] This was retconned in Omniverse, where it is shown that the planet has relatively normal weather.[1][2]



Derrick J. Wyatt[]

Celestial Bodies
Prime Timeline
Seen Planets AldabraAnodyneAnur TransylAranhascimmiaAugstakaCancri ECoda CodaEarthEncephalonus IVGalvan PrimeGliese 667CIncursean HomeworldKhorosLepidopterraMikd'ltyMonarchPantophagePeptos XIPeptos XIIPerplexahedronPetropiaPisccissPlutoPoiana LüncasPrimusProbity's HomeworldRevonnahSulcusT.K.Terminus IIITurrawusteVilgaxiaXenon
Unseen Planets AeropelaAndesiteAnur G'rrnayAnur KhufosAnur MillganAnur OrmerowAnur PhaetosAnur VladiasAppoplexiaArburiaAtrocius 0Aul-TurrhenChalybeasColeop TerraFlors VerdanceGilli-Perambulous PromenadeHathorKeplorrKinetKiusanaKylmyysLewodaMethanosMolluskusNemunimos IVPattersoneaPolyominusPrypiatosRinga MorrSangerosiaScalpascSightraSotoraggTechadonTerradinoTesslosThalassiaViscosiaVulpinX'Nelli
Spaceborne Species Galilean (GravattackOrbit Man)Evolved Galilean (Ultimate Gravattack)Crabdozer (Crabdozer)
Satellites Galvan BLuna LoboMoonMyceto
Stars Pyros
Star Systems Anur SystemGalvan Star SystemShadow Realm
Galaxies Andromeda GalaxyMilky Way
Other Celestial Bodies Chronal Randomization BarrierForge of CreationNosideen QuasarTeslavorr Nebula
Retconned ChroniaOsmosOsmos V