It's basically confirmed now that it's his actual physical appearance and not a silhouette. He probably does have another form that looks human though.
Similar in that they are long term schemers with the same amibition, but quite different in their honor and moral code. Rocks doesn't seem like the type to stab a comrade in the back, or own slaves for that matter.
Hm, not sure. I never got the impression Roger and WB would low diff Kaido or Big Mom though, especially with their recent God Valley portrayal showing them side by side with the old legends.
I'd say at worst they beat them mid diff. I personally can't imagine a fight against Shanks or Mihawk...
Eh, I think we unfortunately may have to just accept that the Pirate King title as a symbol of strength has lost its luster these recent years. Especially with Imu fearing Joyboy while Roger seemed like an afterthought to him at God Valley.
I'm assured that Joyboy is above Demon Rocks which...