Gyarados

Gyarados is the second evolutionary stage for Magikarp. These vicious, snake-like Pokemon are rarely seen in the wild and are capable of destroying entire cities in a rage. In "Pokemon Shipwreck" heroes and villains lie stranded at sea on a makeshift raft. James berates his seemingly useless Magikarp and kicks it overboard. The water Pokemon turns into a monstrous Gyarados and attacks with a powerful Dragon Rage.

First appearance: Episode 18 — "Pokemon Shipwreck"