Anyone else notice how similar Chopper and Robin's pasts are? Both had a wild haired eldery mentor. Both become dispised by people. Dunno if this was brought up ages ago. Now granted robin had it 100 times worse.
Doctor-san and the Demon
As far as the hair is concerned the same counts for NamiÂ´s and SanjiÂ´s mentors. BellemereÂ´s hair is also not very common as much as it is the case for ZeffÂ´s mustache. Plus neither Nami nor Sanji were very popular before they meet Luffy. Heck, not even Zoro and Usopp leave alone Franky were very popular to begin with.
I never though of that, maybe its because all their destiny's are intertwined heh