The Rubberdex - #100 Voltorb (Patreon)

 It had only been a simple mask, so he had no reason to suspect anything was up when he first put it on. He practically felt like a luchador!

But then it started spreading. And as it spread, his torso started to swell with rubbery "flesh".

It was a slow but heavy bloat that he didn't notice at first, but couldn't ignore once he did. Yet when he attempted to squeeze his steadily rounding form back into shape, his arms stuck fast, and while they were pulled tighter into his body his legs started to follow suit.

Soon, he was nigh-unrecognisable. His features being smoothed away, and his entired body reduced to a silent, scared orb.

Eventually he would be found, and initial mistaken for a particularly large, squeaky Pokeball for a few weeks, before someone would notice his eyes moving~

Hopefully he'd not been used as a toy before then...!