He was Luke fing Perry, as Brad Pitt puts it.
As for Perry, he portrayed Scott Lancer, an actor in one of the shows Rick stars in.
I think that it will be a pleasure for those fans of Luke to see.

Credit: Sony
In a new interview withEsquire, DiCaprio and Pitt reflect on working with the late actor.
Pitt adds, Thats Luke fing Perry!
It was this strange burst of excitement that I had, to be able to act with him.
Man, he was so incredibly humble and amazing and absolutely committed.
He couldnt have been a more friendly, wonderful guy to spend time with.
I got to sit down and have some wonderful conversations with him.
It was really special.
Read their fullEsquireinterview here.Once Upon a Time in Hollywoodhits theaters July 26.