Archy was first seen at Mt. Mortar when Crystal was training to become a capture pro. During her training, Archy was a wildPokémon out of control due to an eye injury from a Larvitar. Due to his attack Crystal fell and broke her arms. When she later awoke a group of wild Pokémon helped her recover. After figuring out what happened she went looking for Arcanine to see what caused his rampage. When she found him she noticed his eye, and had Parasect nurse his eye back to health. Noticing that he was not naturally aggressive, Crystal decided to add him to her team.
In Suddenly Suicune II, Archy battled Suicune to try and help Crystal capture it. After failing the capture Crystal sends Archy and Bonee after it. Bonee rides on Archy and uses False Swipe while Archy tackles it. While it appears Suicune blocked, it soon became obvious that a translucent wall between Suicune and Bonee was made. Archy, alongside Crystal and Bonee, attempt to keep the wall from closing but in the end Suicune closes it and escapes.
In Lively Larvitar, Archy helped with Crystal's training on Mt. Mortar. Suddenly, Archy growls, and the Larvitar that injured him before appears. It then begins attacking Archy, while targeting the right side where he has trouble seeing. Due to this Archy is quickly defeated and Megaree finishes the battle for him.
Archy is a very quick-tempered Pokémon and often rushes into battle using his incredible speed. Archy has proven to be a strong battler and is Crystal's main mode of transportation. Due to a Larvitar attacking him he has bad eyesight on the right side. This can be used to his disadvantage, as Pokémon aware of this weakness are able to use this to win against the Legendary Pokémon despite Archy being the stronger Pokémon.