User blog comment:Black Leg Sanji/Time Skip Power/@comment-1595565-20100912152642

I doubt they'll all learn Haki. The only ones who I could see possibly learning it are Sanji and Zoro since there's a possibility that Ivankov and Mihawk may know a thing or two about it. The only other possible members who might learn it are Robin and Franky. Robin is going to meet Dragon, and since both Luffy and Garp have Haki, I'm assuming Dragon does too. Franky might since there might be notes on it in Vegapunk's lab since he researches Devil Fruits. Anyone else I doubt will learn Haki. The order of likelihood is: 1. Sanji and Zoro (tied for first) 3. Robin. 4. Franky