Calyrex was once revered as the king of the Crown Tundra, known for riding a mighty steed and blessing the land with bountiful harvests. However, it began to lose its power as people stopped believing in it, and it passed on into legend.
In The Crown Tundra sub-story, The Sacred Bonds of Soverign and Steed!, the player meets Calyrex after fixing a wooden statue depicting it in Freezington by replacing the Wooden CrownPeony mistook for a pillow on the statue's head. Calyrex, thankful, beckons to the player, bringing them to an isolated part of the village before challenging them to a battle. After being defeated, Calyrex seems satisfied by the player's show of strength, but seems to have trouble with communicating what it wants to say. Just then, Peony, overhearing the commotion from the battle, comes to check in on the player, only to be possessed by the Legendary Pokémon's psychic powers. Using Peony as a proxy, Calyrex introduces itself to the player, explaining that people these days treat it as a fairy tale, and that its powers have diminished notably ever since it was departed from its loyal steed, which is depicted in the statue the player restored.
Calyrex, having itself forgotten the details of its legend after having lost its power for so long, asks for the player's assistance in reuniting it with its companion. Together, the two discover Calyrex's steed favored a certain type of carrot that grows in the tundra. After procuring a bag of Carrot Seeds, the player grows either an Iceroot Carrot or a Shaderoot Carrot, after which they catch a glimpse of Calyrex's steed, Glastrier (if the player grew an Iceroot Carrot) or Spectrier (if the player grew an Shaderoot Carrot). After stopping the now-untamed Pokémon from running loose in Freezington, the player and Calyrex, together with the town's mayor and Peony, make new Reins of Unity, and set forth to the place where Calyrex once lived and reigned, the Crown Shrine. There, Calyrex successfully uses the Reins of Unity to tame its steed again and regain its full power. Calyrex then challenges the player to a battle and lets itself be caught by them.
Personality and characteristics
Calyrex is highly intelligent Pokémon and has a regal demeanor, speaking in a polite tone to the player, and treating Peony with care while using him as a proxy. Despite the people of the Crown Tundra having forgotten about it, Calyrex is still concerned about their future, and is only able to move on from its past with the player's help.
