Legendary Planet, known in Japan as the Planet Series (Ｐ（プラネット）シリーズ Puranetto Shirīzu), is a series of monsters with various Attributes (primarily DARK) and Types (primarily Fiend and Warrior) who serve as a major plot point in the Yu-Gi-Oh! GX manga. All members of this series are Level 8 Effect Monsters, except for the Level 10 "The Supremacy Sun" & "The Tyrant Neptune" and the Fusion Monster "Elemental HERO Terra Firma".