Otherworld Miniatures has a fantastic human thug in their Non Player Character range called the NPCT7 – Tavern Bouncer.
I am still on the hunt for more guys like this.
Lead Adventure looks like they made some rather tasty thugs. Not sure if these are still available, since they didn't show up in their store. Could be out at the moment.
Citadel back in the day made some outstanding Thugs
Warlord Games has a few interesting figures in there Pike & Shotte.