Ultraman S01E03 - The Gift from Space

While investigating an undersea volcanic eruption, Jun and Yuriko witness the splashdown of a Mars Exploration Probe. Recovered by the Space Development Agency, they find strange images and two golden spheres inside the capsule. They jokingly conclude intelligent beings on Mars returned the capsules and gifted them the spheres, but after a thief steals them, a monster named Namegon is unleashed.