Well, I can see how hard it is for you to spike, since ZSS has only one spike, her Down B.
Kirby isn't the only one with that kind of ability. Marth and Olimar are able to footstool and spike you with a small percentage of actually coming back (I meant for the victim and Olimar >_>)
Ugh, I don't want to talk about Olimar...He's the only person I actually have trouble with. I mean, I have trouble with Marth and Meta players, but I can't handle an Olimar player for the life of me >_<. The only thing I can beat him at is edge hogging, since his aerials HURT, and his smashes and grabs have godly range.
One more thing, I've also managed to use a Spike combo with Snake, although it's a work in progress..Basically, I utilt the enemy to the end of the stage and then I fair spike them. I call it the Uzumaki Barrage O.o.