Yu-Gi-Oh! Duel Monsters: Season 1, Episode 147

1 - 147: Nameless Dragon Timaeus

Not only is our world on the brink of apocalypse, but an entire domain of monsters is also on the verge of collapse! The guardians of both Earth and the monster domain must unite and fight against the largest terror they have ever faced, a malevolent menace whose body is miles in length!