Alien Rock (ロック星人 Rokku Seijin) were invaders that appeared on Earth during the Emergency Directive 10-4·10-10 series.
Subtitle: Space Phantom (宇宙怪人 Uchū Kaijin)
- Height: 4 ft
- Weight: Unknown
- Origin: The Rock Star
Two Rock aliens came to earth to kill Dr. Yamashita Seiichiro.
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