Word up! This is a kit-bash / conversion from various loyalist space marine parts, chaos marine parts, a chaos marauder head and a maxmini.eu jet pack (these guys make some awesome conversion parts as I've said many times before!).
The paint job loosely follows the recipe I previously used on the few Word Bearers I completed a while back.
I think my favourite things about this model are the hair being blown to the side, which I think adds a bit of extra dynamism to the pose, and the torso armour from which I have roughly trimmed away an imperial aquila to give (to my mind) an impression of a salvaged and desecrated bit of imperial armour.