The Go-Rays were the natives of the planet Go-Ray. They were humanoid except for a single wheel instead of legs. They had metal bodies, large eyes and wide mouths.

When the First Doctor, John and Gillian arrived on their planet, Go-Ray police officers arrested them after one of their cardium reactors malfunctioned. The Go-Rays thought the travellers responsible for the accident. The travellers escaped and, making their way to a cave outside the Go-Ray city, acquired mercury to replace the cardium and repair the reactor. The Go-Rays tried to capture them at the cave, but the travellers escaped. The Go-Rays later found them in the reactor room and sealed them in, intending to recapture them, but let them go after the Doctor convinced them that they had repaired the reactor and he was a magician. (COMIC: Enter: The Go-Ray)

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