Cy-Bugs

Cy-Bugs are the secondary antagonists of the 2012 film, Wreck-It Ralph. Menacing creatures known as Cy-Bugs are a deadly threat to not only their game, Hero’s Duty, but the entire arcade. They know just three things: Eat, destroy and multiply. Players beware! Cy-Bugs can morph into anything they eat—from an attack buggy to an assault rifle. They do have one weakness—an attraction to bright light. (They are bugs, after all.)

Background
Cy-Bugs are savage and destructive creatures. As their name suggests, they are robotic bug-like beings with many insect-like qualities, for instence the ability to fly, pitchers, and crab legs. They attack any other living creature that moves, all but their own kind. In hours, they came multiply to hundreds by laying sensitive eggs, that can hatch by even the slightest touch. One of their most dangerous features is their appility to obsurb any person or item they devoure. It is known that if they eat a living being, that being may become a Cy-Bug as well, as seen in King Candy's case.

All theses facts make the Cy-Bugs dangerous and powerful creatures.