Earth

Earth (地球, Chikyū), also known as Terra, is the home planet of Humans, a few aliens, some human/alien hybrids and many animal life forms, located in the Solar System as the third planet.

Earth is said to be a Level 2 planet and it appears as the common setting. As the series progresses, aliens started living on the surface of Earth with Humans.

Notable Inhabitants

 * Humans
 * Human/Alien hybrids
 * Osmosians
 * Kevin Levin
 * Pyroxivors
 * Dolphins
 * Interdimensional white lab mice
 * Cryptids
 * Chupacabra

Non-native species

 * Revonnahganders
 * Rook Blonko
 * Galvanic Mechamorphs
 * Ship
 * Kraahos
 * Seebik
 * Lackno
 * Loovis Slerdlerks
 * Kinecelerans
 * Kineceleran Kids
 * Galvans
 * Blukic
 * Driba
 * Nosedeenians
 * Unknown
 * Various citizens of Undertown

Notes & Trivia

 * Earth having dolphins, white lab mice and humans as sentient life forms is a reference to The Hitchhiker's Guide To The Galaxy by Douglas Adams, in which dolphins and white mice are more intelligent than humans.
 * According to Rook, Earth is an open system.
 * According to Driba, aliens are not allowed to urinate in Earth's bushes as it could lead to an environmental catastrophe.
 * According to Max, most of Earth's myths and legends come from alien encounters in ancient times.
 * According to Retaliator:
 * Stonehenge is a Galvan practical joke.
 * The pyramids were built by the Tetramands.
 * According to Derrick J. Wyatt, when Azmuth first discovered Earth (as he revealed he did in Solitary Alignment) he called it "Terra".
 * In The Mother of All Vreedles, Ma Vreedle refers to the Solar System as the "Sol System."
 * In the The Frogs of War: Part 1, Rook reveals that Earth is in a key strategic location for taking over the galaxy.