7 Biggest Missed Opportunities From WWE Royal Rumble 2019
2. No Demon King

While the Universal Championship match between Finn Bálor and Brock Lesnar certainly exceeded our expectations, there was one aspect that proved to be rather disappointing: there was no Demon in sight.
Bálor always dons the body paint and unleashes his darker Demon King persona when there is an overwhelming threat that needs to be overcome. We've seen him do so in the past to take out the likes of Bray Wyatt or Baron Corbin, so the question remains: why didn't he bring out his demonic alter-ego to help him slay 'The Beast'?
While it's highly likely that WWE did not want to risk tainting the only remaining aspect of Bálor that is, so far, untainted by their booking, from a storyline standpoint, it just doesn't make sense that he wouldn't channel his dark side - especially when he did it during the first ever Universal Championship match against Seth Rollins.
If you had a supernatural monster at your disposal, wouldn't you use it to take down a formidable foe like Lesnar?