Religion: Kryptonian deity 
Name: Rao
Other Names: God; "he who ignited the sun"; Eldirao
Classification:
deity
Publisher(s): 
Number of Appearances: 3
Gender: male
Note: Kryptonian sun god or main Kryptonian word for "God"
From http://www.karalives.com/kryptoninfo.htm:
RAO - In the mythology of ancient Krypton, the sun-god, who was deemed the chief of all gods. So great was the respect for the red sun of Krypton that any soldier of Erok's time automatically became an officer if he had red hair. When Jaf-El preached the worship of the One god, he gave Him the name of Rao, though no longer identifying Him specifically with the sun. Note that in the wedding ceremony, the phrase used was "Rao, who kindled the sun," showing Him to be the sun's creator, but not the sun itself.
Justice League of America (vol. 2) #10 (Aug. 2007): "The Lightning Saga, Final Chapter: The Villain Is the Hero in His Own Story" (mentioned)
Superman
Suggested links for further research about this character and the character's religious affiliation:
- http://en.wikipedia.org/wiki/Rao_(comics)
- http://www.comicvine.com/rao/29-45048/
- http://forums.comicbookresources.com/archive/index.php/t-48463.html
- http://theages.superman.nu/Krypton/glossary.php