Ogre flame warlock:
Ogre knife thrower:
Lava burl with flame armor:
Mega lava chieftain:
Best attempt at a magma headhunter:
Ogre bone breaker:
Ogre haunter. Behind him is the spirit of Fear itself (as the "fear" spell is cast and made effective through it).
if you like these sketches. Credits to @Chaboi_3000
for the wonderful ideas!