Subject-7, an age old Xenomorph Matriarch(sterile queen to be simple). In his many decades, the numerous battle wounds show distinctly on his grey chitin plating, his long spear tipped tail, arms long and small, legs, and his head crest. The most distinct are the 2 gash wounds running diagonally in a parallel fashion above his dangerous jaws, and the burned-in number 7 on his right shoulder. Many scars indicate long battles with Humans, and Predators(Yautja) alike. Through much practice, this wizened creature has learned to take down even the strongest creatures that might hinder it. The body count increases, but he is forever stuck, always out of reach of being able to start a hive.
bio: Subject-7 was the spawn of experiments conducted by Weyland Yutani. The goal of these experiments was to find/create perfect examples of pure Xenomorphs. Subject-7's facehugger grappled onto a careless scientist searching for eggs. Melted right through his helmet. The scientist was rushed to a containment tank. As the future subject began to emerge, something went wrong. An extremely rare defect caused the subject to become infertile, thus unable to start a hive. After weeks, Subject-7 was full grown, in a stasis tube, and thinking of possible escape paths. He could not sense his queen, he wished dearly to return. One day, months after the experiments began. Subject-7 shed the borrowed human DNA in exchange for the form of a Queen. After being branded with the iconic number 7 in it's shoulder, he escaped the tank, violently, killing off every last human detectable. It was not until shortly after that he found himself on a different planet. The ages past, Subject-7 was growing older not knowing why it could not produce eggs. The Yautja sent an elder in to terminate the Subject. The confused Subject-7 waged the battle with the elder till both were at their near breaking points. The elder struck out, the gashes went deep, but not deep enough. In anger Subject-7 grabbed the elder and held it down as it ripped the head from it's enemy's body. It's first Yautja kill, the green blood splattered all over him. In the coming decades more such kills would be awarded with scars and few trophies. He awaits those who would threaten him, as well as a hive to protect.