The Beta XII-A Entity - also known as (*) - was a non-corporeal entity who fed off strong negative emotions such as those caused by hatred and violence. Approximately one million years ago Q fell in with what he would later call a bad crowd, who used the Guardian of Forever to pull the Beta XII-A Entity into this galaxy. This bad crowd consisted of the Sha-Ka-Ree being, a being known as 0, and Gorgon. Among their many atrocities was the destruction of the T'kon Empire. The Q Continuum combined forces and defeated the group. During the battle the Beta-XII-A entity ran off and took shelter on Beta XII-A, where the crew of the Klingon ship IKS Kolode and the Federation ship Enterprise later encountered the entity.