Guys.
What if this is like the Yubel unlock event?
Where we also got Jaden/Yubel after unlocking Yubel?
What if we get the Supreme King, AFTER we unlock Axel?
We didn't get Jaden/Yubel until almost 1 year later after the original Yubel event. You probably got both them both in the very last re-run event. So yeah, highly unlikely especially because that would mean tons of free gems.
I'm pessimist so it's seeming like Hao will be just a voiceless tower monster in-duel, and will talk only in the event dialogue. They did this to Brron in 2 events already and the leaks show only a sprite for Hao outside duel screen.
I mean, this isn't an Supreme King event. So there is no need for add SK entire sprite selection + voicelines + victory pose + lose pose if they're just gonna use a single static image of him for the event.
Relax, in no time Supreme King will be an actual character
But there is a problem. Aigami appeared then without dueling, and Yubel had their entire sprite selection + voicelines leaked as soon as the event started, even though it was just those silly ghouls being dueled at first. Here Hao will be dueled in the last floor, unless they cope out and have him just leave the player and let him to duel against a tower monster minion.