almost any toon CAN farm, but some are better than others. Zerkers relatively weak defense would not make them a decent candidate.
BDs (pet class to keep aggro off of you, and auto healing from pets), Warriors (great armor and shield), Valks (Sword and Board spec, with insta heals/HoT) and SM's (pet focus shield specced) would probably be the best for Midgard.
Edited, Nov 15th 2006 at 9:21am PST by thuri