Suicune from Pokémon Adventures
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 constantly flow forward. A shiny Suicune is light periwinkle, with a darker periwinkle crest and a cerulean colored mane.
This Pokémon does not evolve.
In Pokémon FireRed and LeafGreen, Suicune roams around Kanto if the player character's Starter Pokémon was Charmander and they have beaten the Elite Four. In FireRed and LeafGreen, it is very hard to catch because it will flee unless your send out a Pokémon that has the ability Shadow Tag or the move It appears at Level 50.