D. Belby
Damocles Belby strolled in, entirely at the wrong time (if you asked any organizers, to be honest he only glanced at the official start time on the invite), resulting in some poor staff member's panic as they tried to herd him in the right direction to do an official announcement/introduction. Which is worse than herding cats as he seemed to take no heed of the poor intern's efforts and wandered around delighted at all this potions enthusiasm in the air.
He's keen to chatter and either doesn't seem to notice or care who it is who comes up to him to listen or ask questions. But it's easy to see his attention wanders when it's not about potions or related trivia, and he's quick to bounce from topic to topic based on his whims. Bring up potions and he'll happily (and very enthusiastically) talk your ear off.
Time to go see what these keen potioneers have made!
(No no, why would he go over to the stage just yet? How silly, come come, join the tour. Introductions? Officially opening the contest? Nonsense, all that can wait. And really hasn't it already started? Now let's go see that table letting off the smoke...)