I’d invite Batman. Not much of a partier but he can pay.
Maybe Atrocitus and Dex Star. Want to pet the kitty.
Probably the Martians as well. They seem fun.
Of course Alfred. His food would taste great. Besides that maybe Clayface and some other favorites to fill it up.
Wonder how Darksied would be.
I’d have the Rogues over. They seem like pretty chill people when they’re not trying to kill the Flash. Though I’d omit Heat Wave, he’d burn the place down out of compulsion.
Okay, as far as my guest list goes, it would include
Hal Jordan
Alan Scott
Bruce Wayne
Selina Kyle
Wonder Woman
Cliff Steele
Jane Morris
Rita Farr
Larry Trainor
Danny the Street
Oliver Queen
Dinah Lance
As far as who would be off the list, obviously villains such as The Joker, Lex Luthor, The Brotherhood of Evil, et. al.
Fantastic topic @KM_726 - so many wonderful ideas “on the board” already! I’d love to think of creative or fun guests; but the honest truth is that as long as Batman is there, I really don’t mind who comes!