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Tuber is Cuber's sister, who appears in "Graybles 1000+."

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.

When 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.

Episode appearances

Major appearances

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