something about latched pikmin
Ignore them. As much as you hate taking the damage, you're making your moves more stale than necessary and opening yourself up for free damage from Olimar. If you want to do an attack to lose the Pikmin...hit Olimar lmao... But really, it hurts, but you just gotta suffer through it and be super aggressive ^_^ But in a different way. It's almost like you're camping right in front of his face [camping in the sense that you're waiting and reacting]. I don't think any of his moves are fast enough that you can't react to them and act accordingly, though his tilts/jab may be problematic...I don't know much about those.
if you predict a shield grab [which is pretty easy since you can just sprint at him and bait it sooo easily] stop RIGHT in front of him, barely brief pause, and jab combo his lil ***** ***...can set up for gimps...
Seriously, this is so amazing. Even if rob knows you have his gyro, he will still try to use it instinctually, it's hilarious.
*cries because it's true*
Do. Not. Camp. Olimar.
And as someone else pointed out: do NOT approach from above. Ever.
Olimar's shield is so amazing D: A powershielding Oli doesn't have to fear a fully charged gyro and laser [the combination of those will weaken the shield to the point of shield-pokability from dsmash] so shieldpoking should never be your tactic unless absolutely certain his shield is weak enough.
Don't focus on killing his pikmin. Simply understand which opportunities afford you the ability to punish them. [my favorite is after a respawn, Oli stands there, invulnerable and proud, but his Pikmin aren't invul at all...so he'll pull all 6 out and then...one dsmash will **** all of them, it's -hilarious-]