>>936341829
http://steamcommunity.com/profiles/76561198071194203

Considering Imu backwards is Umi (sea) and his symbolism is linked to the devil, I'm pretty sure he's either the devil himself or someone who ate the hito hito no mi: model devil.
My theory is that he might be capable of rewriting history and moving people as pawns (as proved in one of the last chapter with the domi reverse). nika is the natural enemy because he "escapes" this power. If we already saw him, I think it's in the Skypeia arc. I like the theory that it may be represented in the golden ship

I might have killed the english language here and there, I tend to do too many subordinate clauses in my own language