Happy

Happy (ハッピー Happī) is a cat with some magical power, which may be the reason for his ability to speak. He can temporarily grow wings on his back and fly, and is only capable of carrying one person in this form. This is also the only kind of transportation that does not make Natsu sick. When asked why Natsu got angry and exclaimed that Happy was a friend, not a means of transportation, ironically Natsu later gets sick when Gray gives him a piggyback ride when he's injured. He's very close to Natsu and becomes friends with Lucy quickly. The three form a team at the start of the manga. Happy is a full-fledged member of Fairy Tail, and has a member stamp on his back. It is not yet revealed if talking animals are common in the Fairy Tail manga world, or if Happy is a mage that's simply been transformed into a cat.

Happy has a very cheerful nature. Even when facing danger, he maintains a smile. Along with Lucy, he is one of the saner members of Fairy Tail and often acts as the mediator between Natsu and Gray.