Happy is a small blue cat or Exceed if you wanna see it like that. He is a proud member of Fairy Tail, The Dimensional Heroes and is Natsu's partner ever since he hatched form his egg. He might look like a normal cat, but unlike regular cats, he can walk and talk. He can use Aera Magic which allows him to sprout wings and fly high into the sky. He has the habit of saying Aye or Aye Sir!