While, as always, you are splitting hairs when you get right down to evaluating the absolute suckiest (or greatest) if you sort by PER under 9 and offensive rating less than 97 and defensive rating greater than 106, you only get 5 guys.
Greg Kite and
It seems pretty clear that the battle for last comes down to Wolf v. Kite. They are both remarkably terrible. Then Foster and Pavlovic have very similar careers, and Iavaroni probably is only 5th worst.