Hector Barbossa is the best character in the POTC franchise. Period.
Portrayed by Geoffrey Rush as a morally-ambiguous magnificent bastard who hams his way through every problem (usually before shooting said problem in the face), Barbossa is one of the most interesting "villain" characters you'll ever encounter, and the only saving grace of At World's End and On Stranger Tides. Don't get me wrong, Depp's Jack Sparrow is an amazing creation who has seared himself upon my generation's brain as quickly and efficiently as the likes of Batman or Ridiculously Photogenic Guy, but personally I find Barbossa to be far, far more compelling because a) he is the bad guy b) it doesn't matter because you still want him to succeed, even if you're also rooting for the good guys.
Oh and these two...existed...I guess?