Brain parasites

Race Name: Brain parasites

Appearances: Backseat Drivers From Beyond the Stars

Home world: unknown

Representatives: Zim's specimen

Large creatures that attach themselves to the heads of their prey and suck out the entire brain, Zim planned to use one of these brain parasites to overtake mankind. The parasites are large sacks of veiny flesh lined with tentacles and eyes with a lamprey-like jaw to suck out the brain. Zim's brain parasite was kept in a containment unit that needed constant adjustments to keep it asleep. After being ignored for too long, the parasite escaped into the base and attached itself to Zim.