[Guitar Woman]

Her Down-A aerial attack racks up damage really fast, and her smash attacks last full power all the way through the strike, unlike most other people. It's a really long strike, too.

Also, pound lets you hover beyond using the jump button (like Marth's sword dance move), and Rest works wonders if you time it right. I'm sure there's other stuff, but I didn't figure it all out because I didn't really care.

Ice Climbers are still horrible, though.