Samus is the only female in Smash, and unfortunately for the rest of the guys, she's a real bitch.  Always flinging a grapling hook about and firing giant balls of energy.  She is one of many women you just don't want to mess with.   Her right arm is a giant gun barrel that she'll try to hit you with, and it will cause lots of grief.  However, she is a light wieght, and a good attack will send her flying.  Try to use her flamethrower.  It is very destructive when used properly.  She is hard to get rid of with side attacks; high attacks are more effiecient.