Hello!
As others said, it is definitely possible! I first made the basic shapes from clear plasticard, and built it up slowly, bit by bit, using greenstuff to fill it out:
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You got me!

I've been recording my progress on instagram as well. Here's how Zlaaq's shaped up:
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@Crowsfoot that headress looks great! It fits his head so neatly! Great work on all the jewellery too. I'm a huge fan of your 'make the most out of the start collecting boxset' post! I'm planning on doing a submerged troglodon soon.
@Oh_Man thanks! I tried hard to match the look of the video game. I even considered trying to sculpt him holding the cobra mace, then decided he was enough work as it was...
Thanks for the feedback y'all!