A common tv formula in which an actor will play his well-known and beloved character AND that character's identical yet opposite evil twin through trick camera shots and the like. But so we don't get confused, the actor will have a goatee when playing the evil twin.

Got the covid-19 vaccine

1. an illegal or nasty counterpart

2. a rouge wi-fi access point that appears legitimate but is actually used to eavesdrop over the internet