BECKY'S BOTH HARLEYS show up. While they're wearing different clothing, it doesn't help distinguish which Harley is which. They probably stole the clothing they were wearing from the Good Derleth's laundry room. Was it something of yours? If you're confused, don't worry, they are, too. They can't tell the good Derleth from the bad and will flip between the two without a care in the world.
??? JULIA shows up. Question is, which one? She looks exactly like your Julia and seems happy enough to sit in one of the chairs with a drink in hand and watch what's going on. She's smiling. Anyone want to try to come up to her and figure it out?
GOOD ELIOT is MCing the event, giving everyone a nice intro onto the stage to sing, and also there to minimize any weirdness that happens if a song gets a bit too personal.
BAD ELIOT naturally showed up for the alcohol. He's already been drinking. He'll be at the bar and is internally making Good!Eliot cringe.
GOOD STEVIE also showed. Since the Good Guys don't know the Bad Guys plan, she doesn't realize it might be a good idea to lay low. Is she a gender swapped Steve Harrington? Bill Batson? Gender & age swapped Stephen Strange? Maybe you don't even notice her. She's just one of the teens after all.