One Piece 681

[Kraco]

Do we know that's even the case? I mean, if Pica is like a stone Logia, and Zoro hasn't actually shown yet that he knows Armament Haki. If that's the case, then there IS no place he can cut Pica.

Sure he has it. He cut Monet's cheek to make her release Tashigi.

Devil's Fruit users AREN'T human.

If using your fruit ability consumed your stamina, Sugar wouldn't have been able to keep her power constantly active for 10 years.

Well, you might be right. That doesn't really change anything, though. Zoro would just need to find the real body. He's been cutting nothing but animated stone so far. It's not like Pica could do much to Zoro, nor does he seem to possess any personality to push him out of his way to pursue enemies.

I would think that any character without Observation Haki would be vulnerable.

I mean, it worked on King Riku, and King Riku is actually somewhat strong going by his performance in the Colosseum.

I'm not sure you quite need observation haki for that. It might be enough to have enough battle sense, especially now that they know it's happening all around them. As long as there's some tough guy nearby, anybody possessed could also be saved by severing the string. Also, I don't think Riku is worth anything compared to the real deals here. I guess he would be able to beat the noname pirates but that's it.