Keith David, who joins Season 6 of Community as Elroy Patashnik, lent his voice as the narrator back in Season 3 Episode 14 Pillows and Blankets (2012).
The trailer for "Portuguese Gremlins" features parodies of the names of crew members of the show: Alexandro Ruebens (Alex Rubens), Danielo Jarmon (Dan Harmon), Christian McKennous (Chris McKenna), Michele Greco, and Roberto Schrabriguez (Rob Schrab).
Martin Mull and Lesley Ann Warren also played husband and wife in Richie Rich's Christmas Wish (1998) and starred together in the movie Clue (1985).
Abed is wearing the Harry Potter-inspired "House Brawl" shirt designed by Alice X. Zhang and Alex Solis.
Abed mentions Portuguese Gremlins, a bad spin-off of the original. Jonathan Banks, who plays Prof. Buzz Hickey, portrays Deputy Brent, in Gremlins (1984).