When Paul goes to talk to Judge Hooper, the actors (Rene Auberjonois and Armin Shimerman) are fittingly mirroring their previous relationship on Star Trek: Deep Space Nine (1993). Their characters (Odo and Quark) had an adversarial relationship which grew into a reluctant friendship.
Craig Bierko (Jeffrey Coho) & Constance Zimmer (Claire Simms) also worked together on UnREAL (2015) as Chet Wilton & Quinn King respectively.