Happy is blue, flying cat. He is an exceed and a friend of fellow wizard, Natsu Dragneel. They are both fellow members of the Fairy Tail guild in Magnolia Happy is a member of Team Natsu, which consist of fellow Fairy Tail guild members: Natsu Dragneel, Lucy Heartfilia, Erza Scarlet, Gray Fullbuster, Wendy Marvell, and Carla( his crush).
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Image result for happy fairy tail