Metal-Eating Alien Bacteria

Metal-Eating Alien Bacteria are organic bacteria that evolved to eat metal when the planet they were native to was covered by millions of metal buildings and machines.

Appearance
They are dark grey and are microscopic.

Power and Abilities
They can eat any type of metal at a rapid pace and can form together to create humanoid creatures or any shape they desire.

Appearances

 * They appeared in the episode Omega and were the main villian in that episode. They were destroyed and no longer exist on Earth.