So here's more information about the Ashmonger than you ever wanted to know. While looking for Coal, the named Ashmonger (and yes, he exists), I have killed hundreds of Ashmongers. Here is all the data I have compiled from them.
Common Drops - I've tried to list these in the order of commonness. The numbers in parentheses are the number of times I found it drop. I've only listed the ones that were stackable, because they were the easiest to keep track of. Remember, I've killed hundreds of these guys, that's why the numbers are so high.
pile of ashes - 4 silver piece of obsidian (169) - 5 silver hardened lava stone (157) - 5 silver 75 copper fire opal (137) - 5 silver 75 copper blood red ruby (88) - 6 silver 25 copper bag of coins - from 6 copper to 8 silver 77 copper. (most of the time it was below 4 silver) Polished Piece of Obsidian (22) - 13 silver 90 copper or 520,160 exp from kill task
Rare Drops - The Ashmongers do have quite a number of good drops. Again, the numbers in parentheses are the number of times I found it drop.
Ash Stained Jerkin (2) - 55 silver 28 copper or 8 fine alloy Blackened Leather Jerkin (1) - 60 silver 85 copper or 36 ridged leather square Lavastone Ring (1) - 49 silver 96 copper Cinder Stained Vest (1) - 55 silver 28 copper or 8 fine alloy Ashmonger Eye Earring (1) - 36 silver 88 copper
The Ashmongers were anywhere from gray to blue to me at level 32. They didn't seem to BAF and they didn't nuke, but they did seem to have a fairly good sized aggro area. Hope this helps anybody looking for Ashmongers.