This are now called Helbrutes, but Ladies and Gentelmen this is original Chaos Dreadnought from 40k 2nd edition. Painted for a friend.
Chaos Space Marines models painted for my friend. Those are meant to be renegade chapter called Skulltakers. But not the ones from World Eaters. These are renegades from Astral Tigers. So they have similar colors dark copper armour instead of ornage one and dark metal trims instead of black ones. I pretty like this idea.