Winston
Winston was sent to the Moon as part of an experiment designed to test the effects of living in space. While all of the gorillas living on the Moon were genetically enhanced, Winston, in particular, displayed “rapid brain development” from the gene therapy, and was taught by Dr. Harold Winston.
With the doctor, Winston discovered science and became inspired by human ingenuity. He lived and worked among the scientists, helping with experiments and dreaming of Earth. The other gorillas, however, weren’t so happy. Leading an uprising, the others killed all the scientists, and took the colony for themselves. That’s when Winston decided to build a rocket ship and travel to Earth, as one gorilla does.
Winston, who took his name from the scientist who inspired him, eventually found his place within Overwatch. When the organization disbanded, he retreated back in seclusion, having been hit the hardest because he lost his family for the second time.