Diabolic Takeover (Patreon)

Seems that opening that portal and unleashing the demonic creature held within has had some very curious effects and sensations. Namely being able to feel the creature writhe within him as it engorges his muscles and swells his body. 

He wasn't to know how much creature would be beyond the portal, and now it's packing onto him anywhere it'll fit - much to Sparky's delight.

He's larger and more powerful than he's ever been, and he's thoroughly lost in the lust of the transformation.

A commission piece for Ethoras.
A followup to this previous picture: Blood Moon Goo