Is there a plugin for this?

[iMadness]

Hi guys, I was wondering if you had any ideas of how I could do this.
I'm going to have ALOT of usergroups, its a gaming forum, with multiple groups of a few members, posting alot.
Is there a way to have usergroups, for the clans automatically made.  Maybe even a forum, just for them, along with a userbar? And is there some sort of way to make a page, for the clans/groups?

I'm just in need of some brainstorming for ideas