Em/3/Green, also referred to simply as Em, was being from an unknowninsectoid species who lived during the mid-23rd century. Although physically weak, and overtly cautious, he was known for being a thief and an expert lockpick. He also seemed to have an aptitude for machines and circuitry. Em's physical appearance included six arms, two legs, and a wide tail. According to Em/3/Green, his people were not known for taking risks, or in other words, were cowards.