Cynthia's Gastrodon

Cynthia's Gastrodon was a powerful Pokemon, who helped Cynthia become the Pokemon League Champion

Biography
Gastrodon's first on screen appearance was when Cynthia, Ash, Brock and Dawn were protecting the Lustrous Orb from Team Galactic. Using its powerful Muddy Water and Stone Edge, Gatrodon easily fended off dozens of Golbat used by the villains.

Gastrodon was later seen in Cynthia's battle with Aaron, where it blocked Aaron's Beautifly's Solarbeam by using Stone Edge as a shield and then launched the attack at Beautifly, knocking it unconscious.