The A Team is a cute pet name to refer to the trio of Alphonse Elric, Ash Ketchum, and Ari Ruka. They all get into wacky hijinx together and sometmes there's explosions if we're lucky.

THE A TEAM

Alphonse Elric

Al is the sane one. So he wants you to think. He's the hypocrite who tells the others not to get into wacky hijinx. Has a mushroom problem.
- D: I do not have a mushroom problem.
- It's okay, Al. We're here for you ):
- But you only tease me about the stalker. ;;

Ash Ketchum

Ash is the puppy and brought the group together when Al and Ari mutually decided that someone had to save Ash from himself. A large portion of all A Team activity is dedicated to keeping Ash safe.
ETA Not a puppy D:

Ari Ruka

The snarky emo boy. Claims to be in touch with reality...actually just has a severe self esteem problem. He's there to tell the other two they're stupid.