Kruug was born as a simple caveman, living in caves, doing caveman activities, whatever those were, but now he is different. Long ago, when Kruug was still a child, he wandered off into his family cave, as he was a curious little caveboy. However, he had not anticipated that his cave would be so long, and after days of roaming the depths of the cave, realised he was lost. Kruug has lived below the earth for all of his life since that unfortunate event, and he is no longer the little caveboy who got lost. Fruug is the King of the caves nowadays, he may have lost the majority of his sight, but he is still a powerful caveman. He has learned how to survive in the depths of the earth, and has even created for himself protection, in the form of his victories. Kruug has protected his body by wearing the bones of a beast he killed while roaming the the caves. He has achieved all of this, and more, but Kruug is not satisfied, and will not be satisfied, until he achieves his final goal. Kruug wants to go back up to the world he came from, back to the surface...