Koka and Vikoka are two beings that are part of the Heeresgruppe Opfer für den Endsieg, appearing in Neo Earth. They are "brothers" connected with a telepathic bond that is so strong that when one is killed, the other will soon die as well. Despite being twins, they differ greatly in their apperance and abilities, and neither is human in appearance and abilities. While Koka has red skin and is of gigantic size (10m+) and incredible physical strenght, but suffers from severe mental retardation, Vikoka is a being of great intellect, but an underdeveloped body. His skin color is green or blue, and his body is that of a fetus, but with the "wrinkly appearance of an old man, and a look in his eyes that betrays a wisdom greater than a man's, and a vileness greater than a beast's". Vikoka is vari