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The Astronauts are the victims of Defender. They are usually seen in the game, getting invaded by Manti Landers.
An astronaut is briefly seen watering a plant and saluting the Defender Spaceship on Defender World.
- Astronauts have a similar appearance to Benny, but with a different color scheme and a non-cracked helmet.
- Astronauts cannot speak, they can only make beeping noises.