Basically, here's where you discuss any character from the Mother series that you want to be put in Brawl.
Lucas is already a given.
Ness...I'd say there's a 99% chance he'll be included.
Now, if I could only say one character that I want included, it would have to be Jeff. It would be pretty sweet to use the Hungry HP Sucker or fire bottle rockets. His ray gun would really come in handy and his Slime Generator could stop enemies in their tracks. Don't you agree?