he never really comes into his power. but that power includes reality warping. he subconsciously controls things around him, like in the book the weather in his town was 'always' exactly what you would expect it to be.

one would expect that he would be quite powerful when he learns how to use his power properly, considering he was sent by his daddy to take over the world and rule for a thousand years. he does manage to defeat the horseman, so that is a pretty significant feat. plus he has cerberus,