The Nindrods are an organization of super-droids whose main mission is to save the world from those who wish to destroy it. 

Mixup was created when the evil Nindredd captured and temporarily drained Red, Yellow, Blue and Green of their power. Mixup may have their combined power, but he does not have their will. 

Note: The Nindrod story was a collaborated effort from myself and ElsaofIce: www.planetminecraft.com/member/elsaofice/