Deathdealer
Mongoose
Another seriously cool series was the Prisoner of the Horned Helmet books. Goth of Baal is a fantastic character and much darker than Conan. The books were written by Frank Frazetta and a co-auther (named White, IIRC) and take place in the same world, although I think after Conan...not sure. The novels are nearly impossible to track down last I looked (unless you're willing to pay a handsome sum) but they're totally worth it.
I agree that Gath of Baal is a very cool character. It is set, for the most part, in a great forested valley where the mediterranean sea is today.
It was credited to Frank Frazetta & James Silke, although Silke did the actual writing.
They are hard to find, but they do turn up in used bookstores.