The Warhammer Horus Heresy Emperor's Children Legion Kakophoni Is Some Great Body Horror 

Seeing stuff like this gives me so much hope for snakebod Fulgrim (Whenever GW decides to actually make one)

Yeah, I used these to convert them into regular Noise Marines.

If like their heads you should take a look at the power armoured Emperors Children praetor unhelmeted. The guns started as a musical instrument created by musicians corrupted by Slaanesh then the Emperors Children got their own ideas, the book Fulgrim goes through the full story.

Metal AF