They don't require food, just a power source, so they harness the computing power of every computer on Earth infected with DRM and use it to charge their batteries.

...They eat BABIES.

They eat everything good about Spore...

shinu1729 wrote:They sneak into your children's bedrooms at night to devour their hopes and dreams.

I want mummy to tuck me in real tight tonight.

Well the Grox is slowing eating options of being avoided to get to the center of the galaxy.

I do think they're cannibals, i mean, why else would those little puny fools be part robot?
They eat chunks out of each other and then replace the missing body parts with robotic parts.

I know that that's disturbing, but its still a guess.