Planet Hammer (惑星 ハンマー Wakusei Hanmā) is a planet from the Ultra Galaxy series. It was used as the sight of the primary Reionic battle in Ultra Galaxy Mega Monster Battle: Never Ending Odyssey and was the resting place of Alien Rayblood.
Ultra Galaxy Mega Monster Battle: Never Ending Odyssey
The location of Alien Rayblood's resting soul, it was from here the ancient tyrant called forth all those with his genes, the Reionics. At some point however, Ultraseven came to the planet and fought with his puppet Armored Darkness. The Ultra was defeated and sealed away.
Among the descendants of Rayblood was Rei, a heroic human, Rayblood who freed Ultraseven and eventually fought Rayblood's spirit with fellow Reionics Grande. Upon Rei's attempts to escape, the spirit aimed to grab the Pendragon and its crew, but was stopped by Ultraman and Ultraseven. Upon Rayblood's defeat, the Planet Hammer was destroyed by the backlash of energy.
- Alien Rayblood (Sealed deep in the planet)