Superman

Superman is considered to be the archetypical superhero, and since 1939 he has been the face of the superhero genre itself. Created by Jerry Siegel and Joe Shuster, Superman's birth name is Kor-El which has been (arguably) interpreted as a play on the Hebrew language, with possible translations ranging from 'Voice of God' to 'Swiftness of God.'
Superman is also associated with the Sun (from which he derives his secular powers). The Sun is itself a long and well-established symbol of the Divine. 
If you're looking to create a Theist within a superhero setting (especially a classical comic-books style superhero), the main man of the genre is himself a great reference for anyone to use. 
==== References: ====
-https://en.wikipedia.org/wiki/Superman
-https://www.dccomics.com/characters/superman
Category:God