Futurama Undead: Lord Nibbler
Now if you could convince Nibbler to eat the other zombies you would only have to worry about one Nibblonian zombie slowly eating every person on the planet, instead of a steadily growing horde of zombies.
Worrying about one Unstoppable zombie Killing Machine is far better than worrying about six billion of them. The downside, That’s a lot of Dark Matter.
Smelly, smelly, Dark, Matter… And you couldn’t even use it for fuel anymore.