Help against Ike? Lol. This is one of the most predictable characters. Even if it's a great Ike player, it still shouldn't be that hard. Just get them off the stage, they have a really easy to gimp recovery. It'll either be quick draw or aether, as soon as Ike touches the sword in aether you can knock him out of it with a well placed shuffle loop. As for quick draw, just hover infront of him and take the hit. He'll go into a fall special without getting any horizontal movement.
Toon Links usually have some sort of pattern, intentionally or not (let's face it, the best ones are semi/full on campy). Find out what their patterns are, find out what they do when you get in close (it's probably gonna be usmash if they're attacking, maybe a spot dodge or a even a roll to get away to camp some more). It's tough, but after you get their play style down somewhat, you can be a bit more aggressive and disrupt it a bit. The bad ones get sloppy at this point, the good players are gonna be tough and you might not even recognize a pattern or even disrupt them. There's always going to be some sort of pattern, and watch out for that boomerang.
I've never faced a good Lucario lol. There's some out there definitely but I've never faced any, so I can't help.
Anyways, goodluck =P