Earth is the 3rd planet from the sun, and he can sustain life! Because of this, he can get insecure when the topic of life on other celestial bodies is brought up. This is what caused the "Moon Revolution," where the moons wanted to be respected by planets, and Earth saying moons should know their place set the ball rolling. Earth gets a lot of quirky and strange ideas, for example when he tried to make a new sun. He cares for his moon, and his friends Venus and Mars, even if things get bad.