Thanks.
As Kirby is one of my mains, I would like to give some advice
Cloud: JUST KEEP HIM AWAY FROM YOU.
if you get him offstage, keep him off, but stay out of range of his aerials. Down air is useful for gimping him.
Ike: Avoid as many attacks as possible. Don't play aggressively, and watch out for U-Smash and D-Smash. They cover a lot of area around Ike.
Diddy Kong: Look out for his combos, and respect his grab range. Try to get him offstage without his jumps available. If you do, then you can get an easy gimp with down air. Make sure to continually follow up the gimp w/ multiple Dairs, but make sure you have enough jumps to get back onstage.
I might give some more advice later, but for now, yeah.
GET THEIR COPY ABILITY AND SPAM