I think it’s hard to separate players that were truly bad from the token whipping boys of those truly dark times for the Avs. For example I really hated Chris Gratton in his short stint here.
Some names that come to mind over the years.
Greg Zanon
Marc Andre Cliche
Ben Guite
Reto Berra
Ben Street
Wyatt Smith
Michael Sgarbossa
Kevin Porter
Brett McLean
Per Ledin
Andre Mironov
Whoa, whoa, WHOA McLean should not be on this list. Dude was a perfectly good player, even managed to center a ramschackle scoring line between Ian Laperriere and Alex Tanguay. No way no how was he one of the "worst."
The rest of those guys were IIRC pretty awful, except I didn't think Guite was all that bad as a low-level grinder, maybe I'm remembering wrong.