Suicune is a slim, quadrupedal, blue, mammalian Pokémon with white, diamond-shaped markings. Its face and underside are white as well. Suicune has a thick, purple mane that resembles the aurora borealis and two white, streamer-like tails that wave forward. It has a long, white snout. Suicune has a large, hexagonal, cerulean blue crest on its forehead with two prongs on either side of the base. It has red eyes, a small tuft of fur under its chin, and small paws with white paw pads.

Suicune has the power to walk across water and purify dirty water with one touch. It travels across grasslands in search of water to purify by following the north wind. Northern winds always seem to blow stronger in its presence. In Pokémon Crystal, Suicune is said to be the closest of the Legendary beasts to and shares a cooperative bond with the . Suicune's personality is said to be heroic, serious, and calm during dangerous situations, as depicted in Drifloon On the Wind! (DP028). Suicune is believed to be both the embodiment of the north winds and compassion of pure spring waters. Suicune loves Suicune Treats made by Snacksworth, who once encountered and rode with it in the past. Walking Wake shares a resemblance to Suicune and is believed to be its ancient ancestor.

As mentioned in Pokémon Sleep, Suicune can observed sleep deeply in locations where the water is clean. When Suicune awakens, it will start racing around the world once more, following the north wind to purify fouled water. Suicune is known to enjoy eating Suicune Biscuits. Suicune can be lured over to a sleeping spot using the Suicune Incense. Suicune has three different sleep styles it sleeps in, they are called Energy-Storing Sleep, Meditative Sleep, and Northern-Wind Sleep.

(Source: Bulbapedia)