Suicune (Japanese: スイクン Suikun) is a Gen II, Water-type, Legendary Pokémon that is part of the Legendary Beast Trio. Suicune is also the mascot for Pokémon Crystal.
Suicune is sky blue in color, with white rhombuses around the body and a white belly. Suicune has an aquamarine crest on its head which is in the shape of a hexagram. Behind its crest is a purple mane with supposedly thick, smooth fur. Two white, ribbon-like tails sprout out from Suicune's back and In reverse. A shiny Suicune is light blue, with a dark blue crest and a cerulean blue mane.
Suicune was first seen by Ash and his friends. Ash contacted Professor Oak to ask what Pokémon was it and he revealed that is a Suicune.
A while later, Suicune saw the Iron-Masked Marauder forcing Celebi to destroy the forest, he saved Ash and Sam from falling off the monster that Celebi created. Suicune eventually got caught in the monster's hand, nearly immobilized. It managed to struggle out of its grip, buying time for Ash and Sam. They eventually succeeded into saving Celebi from the Iron-Masked Marauder.
In order to heal Celebi, Ash and co. brought Celebi to the Lake of Life, but because it was corrupted, its healing powers didn't work on it. Suicune then purified the water, but the water still didn't heal Celebi. Realizing Celebi is dead, they mourned, until many other Celebi came from the sky and revived it. Before Sam and Celebi went back to the past, the group said goodbye to Suicune and it ran off.
In the middle of the episode Suicune is mentioned by Paige (Nurse Joy's youngest daughter) that they are friends and they play together sometimes. When Ash and Paige got in trouble, Marnie (Paige's sister) went to the lake to call Suicune for help but he doesn't comes out, after she realizes that it's her job to save her sister, Suicune comes out and helps Marnie save Ash and Paige. After Suicune left, he was later seen by Jessie, James and Meowth, they tried to capture him but Suicune blasted them with Aurora Beam.
Zoroark, with its ability, Illusion, took the form of Suicune (Along with Entei and Raikou) to cause an uproar in Crown City so that Kodai can freely look for the Ripple of Time. Shiny counterparts of the Legendary Beasts were guardians of Crown City, coming to aid Crown City in times of need. A Shiny Suicune came to Crown City with the other guardians to stop Zoroark (Which they thought was the enemy), but the trio were stopped by wild Pokémon that defended Zoroark, convincing the trio that Zoroark was not evil. The guardians later scared off Kodai after the Ripple of Time was revealed to be an illusion by Zoroark.
- Suicune is the first Legendary Pokémon that is owned by one of Ash's Friends.
- Unlike Eternatus, Suicune is first of Goh's Legendary Pokémon that stays under his ownership.