User blog comment:AYET/Let's Discuss Chapter 733/@comment-4164499-20131226105448/@comment-4899461-20131227023956

Can't be Haki, since nobody is foaming at the mouth. Whatever it is, it seems Lucy (Sabo) has heard rumors about it.

Regarding Meadows, it seems to me that he bears a stronger resemblance to Bobbin than Kaido. The presence of a Yonko in the fight would be pretty lame, because nobody could conceivably take them on. Seems more likely we've got the crewmate of another Yonko than one of the strongest people on the sea.