Personally I always liked the Black Dude in the lairy sports jacket that chases Bond in Billy Bob's speedboat. Classic line:
"We got ourseles a swamp full of Black Russians boy"
But surely these guys just count as henchmen.
Yes, it was Emilio Largo, but the one from Never Say Never Again, which was a ripped off Thunderball for Sean Connery's one-off comeback. Still, it had Kim Basinger and Barbara Carrera in it, so it wasn't all bad. The real Largo in Thunderball was played by Adolpho Celi, with an eye patch for added sinister effect. Even he was not as good as Scaramanga. Great in the book, the film and a classic actor, Christopher Lee, who has been very supportive of the Bond franchise and fan base ever since.
Brad Whitaker. Arms dealer pretending to have a military/mercenary background. Bit of a walt, really. Actor Joe Don Baker went on to play Jack Wade of the CIA, a kind of cut-price version of Felix Leiter (check out this thread: If Arrse did Bond...) in Goldeneye and Tomorrow Never Dies, thus joining the ranks of those who played different characters in more than one Bond film. The others being: Martine Beswick, Maud Adams and Charles Gray. If any other spotters out there know of any more...