• English / United States: Terrakion
• Japanese / Japan: テラキオン
• Japanese (Romanized) / Japan: Terrakion
• Japanese (TL) / Japan: Terrakion

Terrakion is one of the members of the Sacred Swordsman and was one of the Pokémon that helped Keldeo learn the true weight of its sword to become part of the Sacred Swordsman. Terrakion is a very strong Pokémon who is jolly and likes to have a fun time.

While attempting to help save Keldeo from Kyruem, it was frozen in ice. It wasn't until Keldeo returned to face Kyruem again with Ash Ketchum and his friends that it was released from the ice. After Keldeo proved to be worthy to become a Sacred Swordsman, Terrakion agreed that Keldeo should join them and work hard together.