For a dedicated Dorkling run, I recommend a Thief. Besides the obvious synergy between Halfling potions and the Survivor trait, the Thief also provides extra gold to keep the combo going and extra shops so that you have to scum less to get the combo in the first place.
I recommend the Rogue, due to his natural synergy with both the Trisword and Alchemist Scroll (one amplifies his natural advantage, the other cancels his natural disadvantage). Use the black market prep to fuel the gold cost.
Plus if you're going to go for grotesque overkill, you may as well go for something that can be classified as a war crime.
It's no fun using a howitzer to hunt rabbits.
Depends on how many rabbits we're talking about