The strongest team in the Fairy Tail Guild, it is usually made up of Natsu, Erza, Gray, and Lucy, although fans of the series include among them any member who teams up with them during an arc.
Natsu and Happy got along with Lucy they decided to keep the team together. Later Gray and Erza join the team to stop a Dark Guild from killing the guild masters. In the end, after the events of Phanthom they all decided to remain together as a team. Sometimes they are called the "strongest team" in Fairy Tail, seeing as how all the members are very strong and have great teamwork. The formation of this team causes great fear for Makarov, seeing as how all the members are very strong in their own right, both the council and Makarov fear that they might actually destroy an entire city.