Juice

Juice (short for Jupiter Icy Moons Explorer) is a space probe that gained sentience. Originally meant to study Jupiter's moons Ganymede, Callisto, and Europa, he now spends his time "perpetually hanging out" with Nine and Ten. Juice is said to have began observing Earth sometime between the beginning of Game 27 (2080s or 2090s) and the perfection of the nanoparticle network (3500s).