Well I hit the jackpot (after 58 gold chests) and landed me a shiny new Karaoke King this morning. Leveled to 135, max enchanted cyan+ 1, maxed 5 star +12 ocean/tree set (with enough starting energy to have a full bar at start with Dungeon Man) ~51,000ish power. I also just concentrated on maxing his white skill as this was the most anticipated.
Findings: Although he lines up ahead of Wolf in battles, unfortunately Wolf still fires her white first That said, this hero is not the highly anticipated Wolf counter everyone has been waiting for. Some of the other skills do seem promising though and I still have high hopes for this hero. I'll fill you in on other details as I do testing.