Wow, me from last night was really tired.  Looks like I got some worldbuilding to do.  But basically, there is one supreme deity known as Princepi who is said to have created the whole world, various demigods beneath him who stands for various things (i.e. the demigod of adventure and discover Ventura), and angels beneath them.

And yes, half-elves are fine, but it either has to have mostly traits of an elf or that of their other parent's species.  This goes for hybrids except for half-dragons, which are pretty much technically their own race anyways.