In no particular order:
Goodrum
Basile
Chick
Adonis
Groink
I'm a Groink supporter but the only reason people don't let up on him is because they know it gets to him. Mention anything derogatory about his physique he's back on the board for another 10 page plus thread. If anything he's one of the more touchy guys around here.
Nothing phases the others you mentioned but I suspect Chick does get sick of it and wonders why he bothers. But he's a fixture on this board and he seems determine not to be driven off like the other pros. The others on the list, sans Groink, are oblivious.
Speaking of pros, don't forget Steve Namat. That guy was just utterly reamed on this board. Few got it as bad. But he's one tough mother fucker and never let anybody get to him. His sheer resilience eventually won people over. It literally took years but he never gave up. I'm a huge Namat fan.
As far as the top two: Basile is just a stubborn old battle axe. Nobody is going to make him do anything he doesn't want to do let alone drive him off the board. Goodrum I can't explain. I really can't. And he gets it by far the worse. Truly a fascinating aberration. Another fixture on the boards who would truly be missed if the unforeseen should happen. Even by his rabid haters who would never admit it until he's gone. Even his nemesis Basile would miss him.