All the cats in the "Whiskers 'r' We" sketch (Rex, Marbles, Dr. Anthony Meow-ci, Coco, an unidentified Brazilian Shorthair, Baxter, Boots, Justice Cat-anaugh, Felin-ona Apple, Allan and the organ donar cat) are portrayed by Nino Positano, who is Kate McKinnon's actual cat and who has his own Twitter and Instagram accounts.
Bill Hader's appearance as Lindsey Buckingham in the "What's Up With That" sketch is a still picture from a previous installment rather than the actual Hader.
Although some independent news sources credit Brad Pitt as the host of this episode, the show did not officially name a host during the opening sequence, and on the official website the show lists "The cast of SNL" in the field for host.