Here is the built and based Belial for my Deathwing force. Components are all Plastic: SM Tabard Chest from Black Templars, Black Templar head, Assault Terminator Plastics legs, back and Sergeants claws, Dark Angel Dreadnought Greaves as shoulder pads (Stolen from Matt at ArchAngels). The greenstuff work is poor but fills the gaps in the side and along the collar.
Side view. I tried to make him unique but avoided banners or anything since I only have 5 other assault termis for my normal army, I might be forced to use him just as a normal squad member.