Ka-Ma, or the Tree Spirit Ka-Ma, is a deity worshiped by the Calorian. Taking the form of a blue tree with a twisted trunk, the Calorians prayed to Ka-Ma to deliver them a savior that would defeat the Dryg. The Guardians of the Universe sent their newest Green Lantern, Hal Jordan to the planet to handle the situation. The Calorians believed him to be sent by their god and directed him to the beast. After Green Lantern froze the Dryg the Calorians prayed again to the tree spirit.
- Green Lantern 1 (Vol. 2)