Demolecularization gun
From MediaWiki
Whenever Skullcruncher isn't stuffing his face with hapless Autobots, he's zapping them with his demolecularization gun (or 'softening-up' gun as he calls it, since 'demolecularization' is waaay too big of a word for him). One shot from this gun makes even the toughest of Autobot hides as soft as rubber, making them easier for him to scarf down. All he has to do is to remember to chew.
