Of course you don't have to be called Team #2. Discuss among your team and decide what name you want to represent your team with. When everyone has agreed on a name, a staff member will change the name.
The Peachalinettes? (lol)
Dino Dino deadly?
Fungi friendly?
Terrifying Trio?
The ultimate combination? (We'd have to win a lot to pull off this name =p)