Had I previously heard of Shadowman? No.
But I am super intrigued now, it is so rare that we see the exploration of Pantheons outside of the Greek/Roman Pantheons that this feels refreshing and new.
While Jack and Alyssa's relationship is also interesting in it's own way.

This in some ways feels like an Origin Story, in many others it feels like you are supposed to know so much more about Shadowman and Jack. It isn't a complete barrier to entry but it does make you feel like you are slightly out of the loop for roughly the first half. By the second half you feel more Intune with the story and what is happening but there are still some wtf moments.