A talking cat hatched from an egg by Natsu and Lisanna. Mistaken as a dragon's egg, Natsu kept the egg and care for it. He was named Happy because when he was born, everyone in the guild is happy and thought as a token of happiness in the guild.
He is just like Natsu when it comes to personality. Stubborn and sometimes dumb but when it comes to his friends, he will never back down from the enemies.
Happy helps Natsu fly over or be his "wings" for a period of time.
