Can't really tell, the resolution is a bit too low, i also wonder about that demon thingy in the lower left corner of the pic, don't think i've seen that one before, unless its from either the dwarf or amazon's first maps.
On topic: It could be an unused character from earlier development seeing as the title on the picture is (the now changed title):
"Blade: the Edge of Darkness"
From top to bottom (dont remember the correct names):
2. Abyss Demon, Golem (bronze), Chaos Knight, "Last Boss", "Summoner/necromancer boss", fleshling (tiny one on stone), "blood demon", Minotaur.
3. Mummified Zombie, Vampire, ????, Dark Knight, troll.
4. ????, Barbarian, Dwarf, Amazon, Knight, Orc, Spider, Big Orc, ZombieKnight (or quite possible traitor knight, but his pose suggest the former)