Zayne Carrick in the Dark Horse KOTR series:
[spoiler]The masters kill all their padawans in the first issue, but Zayne escapes. Clearly he’s not “part of the system” – at least through issue #29.[/spoiler]
Cade Skywalker in Legacy:
[spoiler]He’s pretty much a low-life bounty hunter hooked on death sticks to avoid visions of Luke (a la Ben) telling him to get his s#!$ together. Definitely not a good 'ol Jedi, though he’s kinda working his way slowly toward it.[/spoiler]
Jacen Solo in the Legacy of the Force Novels:
[spoiler]I can’t remember if he completes all his training or not, but he definitely has himself “declared” a Jedi master by the Galactic Alliance by political means. And he totally ends up a Sith lord down the pike…[/spoiler]
There are probably others – those are the ones I can just think of off the top of my head.