Doesn’t it seem weird that the mystery guy is chummy with Crocus, who was just Roger’s doctor? Maybe Shiki could have some sort of relationship with Ray, who is a much more prominent and important Roger Pirate, but Shiki being friends with Crocus would be like Kid being friends with Chopper, the two have no reason to have a relationship. Crocus may have been a Roger Pirate, but he was never really shown to be anywhere near as famous of Ray or even Gaban.