In "Graybles 1000+" it is revealed that when she and Cuber were children, they once found themselves lost in a mysterious environment, where Cuber soon found himself cornered by a feral creature. Tuber's assurance and guidance, however, allowed Cuber to defend himself from the creature.
As an adult Cuber found himself stranded in a post-apocalyptic Earth. This memory provided him with the motivation to become a hero and take control of an alien ship to escape the planet. At the end of the episode it is shown that she and Cuber live together on Cuber's spaceship.
- "Graybles 1000+" (debut)