In my limited experience, Kirby's side B and forward smash are his biggest kill moves, on the ground. In the air, I've been able to occasionally"fall into" an aerial side B's second hit.

.... This is the Melee Kirby boards lol

As far as I see, you can't kill anything with Kirby's forward B because it's so hard to pull off. If you did pull it off, then you'd probably miss and get punished for all that stupid lag. Forward smash also is a hard thing. It's a sure strong attack, but it's such a slow attack. Like the hammer, you get pummeled if you miss with Kirby's forward smash.

Some good Kirby KOing attacks are his U-air or B-air with following up into an edge guard of your choice.

A few characters in brawl actually have a good disadvantage against Kirby's forward B when they make certain moves. As an example for Luigi - if Luigi does up B after his attack he falls to the ground; as long as you place yourself where Luigi falls you get a good shot of landing the hit. The main thing to do is sit back and look for your opponents attacks that leave them open while their charging/falling.

Again, for those that missed it. ^

Yeah, Kirby's side-b has many sourspots, maybe...200...?

But it is somewhat easy to land to these who use their recovery.

Look at my bad grammar 3 years ago. I'm interested in writing a Kirby FAQ... I've never been as good as playing Kirby as I am now