Gajeel is an Iron Dragon Slayer. He's short-tempered, tenacious, and fiercely loyal and dedicated to his guild. Despite saying that he doesn't want to make friends, he tries in his own way to do so. Behind Gajeel's tough exterior is an emotional guy with a sense of humor and a love for music.

Spoiler

He starts out as a member of the Phantom Lord guild, but later joins Fairy Tail.

Spoiler

Gajeel, along with the other dragon slayers, was actually born 400 years ago, and was sent to the future as a child to help destroy Acnologia.