After evolving from Grovyle to defend it's love interest, it lost all ability to use attacks. Eventually regaining the ability to use the attacks, Sceptile became a vital powerhouse in Ash's team which can hold its own against legendary Pokémon including Deoxys, Regirock, and Darkrai. Despite being one of Ash's best-trained Pokémon, Ash decided to leave Sceptile at Oak's Lab while he travelled to Sinnoh. Sceptile was used again to defeat a Darkrai in the Sinnoh Pokémon League. Treecko → Grovyle → Sceptile ♂