|This article belongs to the Classic Continuity|
Encephalonus IV has tall trees and a greenish sky.
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.
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 Cerebcrocrustaceans have evolved to be able to generate their own electrical storms just by thinking hard enough, contributing to their homeworld, rather than depleting it.
Encephalonus IV is the fourth level in Ben 10 Alien Force: Vilgax Attacks.
The name of the planet comes from the word "encephalon", meaning "brain".
- Encephalonus IV has at least two moons.
- 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. This was retconned in Omniverse, where it is shown that the planet has relatively normal weather.