Pikens and Kraul

Pikens and Krauls are Mogadorian beasts that are seen at the battle of the school in I Am Number Four and in Santa Teresa, in The Power of Six.

They are used as living weapons by the Mogadorians. They are able to think for themselves though, as John was able to convince a Piken to turn against the Mogs in the First Book. Pikens are large, destructive creatures, while Krauls are smaller, deadlier beasts.