He really makes me think to old chaos warriors (I mean when they weren't uniformized, in the 80/90's)... The way he looks, the head forward... great. There's another one of your swordsmen, the number #4. He's a little bit chaotic in his position, in the armour... Like a Thug in armour. This one is like a Marauder.Just no words for the paintings, great of course.I'm OK with the acceptability in a mercenary unit.
Brilliant! Odd figure though; it does look more like a chaos warrior...
You're probably right, maybe these unreleased warriors were not meant for Empire but for Chaos. I'll reconsider their allegiance when I start painting my "Kaon the Idolator" army :p
He doesn't look out of place anyway!