Pokémon (video game series) - Wikipedia

Not undertale related, but apparently Toby Fox was the composer for the new Pokémon game : r/Undertale

Pokémon X and Y - Wikipedia

Pokémon Duel - Wikipedia

Misty (Pokémon) - Wikipedia

List of Pokémon characters - Wikipedia

Pokémon: Lucario and the Mystery of Mew - Wikipedia

Pokémon: Arceus and the Jewel of Life - Wikipedia

Pokémon - Wikipedia

Pokémon Conquest - Wikipedia

Pokémon Trading Card Game (video game) - Wikipedia

Pokémon Black 2 and White 2 - Wikipedia