Keldeo is a dual-type Water/Fighting legendary Pokemon. While it is not known to evolve into or from any Pokémon, it has a second form, which is activated by triggering an event in the Oath Woods, where Cobalion, Virizion, and Terrakion teach it Secret Sword, and it changes its form permanently as long as it knows Secret Sword. Its original form, Ordinary Form, will then become Resolute Form.
