Galkimes (ガルキメス Garukimesu) is the first monster/alien fought by Ultraseven X.
Subtitle: Space-Time Lifeform (時空生命体 Jikū Seimeitai)
Summoned by alien invaders, the giant life form appeared in the city and began to rampage. At first it seemed as though nothing could stop it until a red giant appeared, knocking him down. Although he attempted to put up fight, he was trounced, even the assistance of his allies' spaceship didn't help and he was killed by the Eye Slugger, followed by his allies via the Emerium Beam.
- Galkimes is designed after the plant Ficus microcarpa.
- The suit was originally made translucent on the head part for the suit actor to see. Eventually, this concept was scrapped.
- The head of Galkimes was modified into Galmess in Ultraman Orb The Movie: Let Me Borrow the Power of Bonds!. Two years later in Ultraman Taiga, Galkimes' hands are also used for this alien in the final episode.
- Height: 40 m
- Weight: 60,000 t
- Origin: Unknown
- Powers and Weapons
- Energy Ball: Galkimes can fire green fireball like projectiles he conjures from his hand.