is the first season of its series that is the 24th entry in the Tsuburaya Productions' long-running Ultra Series. It is an adaption of the video game Mega Monster Battle: ULTRA MONSTERS. The show first aired on December 1, 2007 and concluded on February 23, 2008. On December 20, 2008, the second season titled will premiere. Ultra Galaxy was the first Ultra Series to be shown as a pay-per-view service.
: A mysterious man with amnesia who joined as a member of ZAP SPACY. He is hostile to monsters and uses his Battle Nizer to fight them. He is haunted by the image of the giant buried in the rock. So far, he has only summoned , , and .
: The subcaptain of the Space Pendragon. She is a strict ace pilot and is Hyuga's right-hand man. Although she was skeptical of Rei, she was rescued from Neronga by him and reconciled with him. Her full name is .
: The rookie crew member of the Space Pendragon. He is a monster maniac who was majoring in monsterology at university. He reasoned that the giant in Rei's memory is Ultraman. His full name is .
: The engineer of the Space Pendragon. His full name is .
: The captain of the Space Pendragon. He is hot-blooded man who is excellent in martial arts and has overcome many hardships all over the universe. Members have to call him "Boss." His full name is .
: The leader of Vincent Island which was the officer of the resources transportation base in Belargo City, and Jun's elder brother. He has once......