Gurren Lagann. I haven't seen that series yet but I have heard really things about it.
Saturday - A One Piece cosplay and Cpl Giroro from Keroro Gunso
Saturday Night Party- Giovanni from Pokemon (Gameboy version)
Sunday - Apachai Hopachai from History's strongest Disciple Kenichi and General Sakaro Winters from D Gray Man.
So are you staying the whole weekend or just the one day?
" A wise man knows his Limits
A great man knows he has none"