I've been reading, and I don't understand why you're so worried about Vila and the creature. Maybe you could add one player to each group, and nothing would change. It would be good for everyone, and it would be very appealing for everyone to play with them.

No one is worried about anyone; the tournament rules are set, and everyone was informed in advance. Those who wanted to participate had time to do so, and those who didn't, didn't.
By the way, the creature has been in group D for about 4 days now, but he doesn't have time to play, which isn't ideal. Vila also wrote that he might only be able to play on weekends, and when replacing players in groups, you have to approach it in a differentiated way so as not to gather all the monsters in one group. So, I think everything is going as planned and according to schedule.