X-Men
Team Leader(s):Charles Xavier || Jean Grey || Scott Summers
The superhero's of Bayville. These are the mutants that choose to use their power's for good and the well being of humanity.

Brotherhood
Team Leader(s):Pietro Maximoff || Lance Alvers
The training-to-be-villians of Bayville this are the young mutants who use to use their special abilities to harm humanity. They believe in mutant supremecy and will do whatever the Acolytes tell them to do. The mutants in this group are mainly teens who are discovering how to use their power's and care more about partying and getting high then anything else.

Acolytes
Team Leader(s):Magneto
The Acolytes are 100% firm believers in mutant supremacy. Most of their life goes into aiding their cause of ruling over the human race. Mainly older adults who are more expeirenced or are very bent on mutant supremacy go here along side Magneto.

Morlocks
Team Leader(s):Callypso
A more quiet and reserved group, the Morlocks prefer to lurk in the shadows. Refugee's mainly consist of the group who accepts anyone to it's ranks. Most of the mutants that join the Morlocks live in the sewer systems and suffer from some sort of physical mutation.

Outlaws
Team Leader(s):No One
Outlaws are mutants that don't belong to any specific group. Their loyalties lay in themselves or in some rogue orginization.

Humans
Team Leader(s):Robert Kelly || Stryker || Others
Hm well basically this group consist of you and me, humans. The top dominators of Earth who at this time can seem to accept mutants. Of course not all humans despise mutants but it seems more that 70% do, which enraged mutants like Magneto and Apocalypse.