[@samreaper]Let's put it this way: if he [i]somehow[/i] got onto the crew, the way he acts would mean that the first chance that she gets, Maisie would punt him into the ocean like a croquet ball.

The fact that he's ridiculously dark, edgy and unfitting for a crew of supposedly heroic pirates kind of ensures he wouldn't last long amongst a group of said heroic pirates even putting aside all other problems.

EDIT:
[quote=@samreaper]
Acting like he doesn't fit the rp even though we've seen several [i][b]villains[/b][/i] like arlong and DD who were cruel and sadistic as all hell, but somehow my guy doesn't fit at all because he's not a nice guy. heh
[/quote]

Emphasis mine.  That is the problem.