Natsu is Fairy Tails resident Hothead. No matter who he sees, a fight is always known to come after that. Natsu is a Fire Dragon Slayer Trained by Igneel, but Igneel himself vanished leaving Natsu all alone and wander to Fairy Tail where he was raised and became a mage.
He has fought countless enemies in Earthland as well as guilds. The the bug kingdom of Crystalia invaded and kidnapped a few of his guildmates, but Natsu was taken by Flux. It didn't take long for Natsu to escape and crash a private party a few of the boys were holding in the forest. After venturing with them and entering Lyoko one time, they seized the Kingdom of Valora to Free Yu and the Investigation team, battling Registeel himself and Winning. Since then, he has participated in countless battles against enemies. After a most recent battle with Ouma though, the Fairy Tail guild returned home for a bit where they took part in a battle against Tartaros. It was there that Natsu finally met back up with Igneel after so many years, only to be stricken with sadness as seeing the one who raised him killed before his eyes by Acnologia. With tears running down his face, he declared he would be the one that grinds Acnologia into dust. After this, he trained for a year in isolation, without any knowledge that Fairy Tail disbanded.
After a year, he reunited with Lucy and decided to take matters in his own hands and restart Fairy Tail. After doing so, he rejoined the team.
Unknown to him, there is more to him than meets the eye. Secretly, he is END, Etherious Natsu Dragneel, a demon created by Zeref, as well as his younger brother.