"Articuno is a legendary bird Pokémon that can control ice. The flapping of its wings chills the air. As a result, it is said that when this Pokémon flies, snow will fall."
Generation I set a lot of trends for future Pokemon generations. One of which was a trinity of Legendary Pokemon that would be a sub-focus of the game. The first of which was Articuno. The legendary bird of ice has been featured in both the Pokemon movies, but also in the anime several times. Including being used by a Battle Frontier master against Ash, who beat it with his Charizard. Plus, Articuno is the symbol of Team Mystic in Pokemon GO. Showing the reverence this Pokemon still has.
Articuno's Basic Attack is Frost Breath, while its Special Attacks are Blizzard, Ice Beam and Icy Wind.