Fiend is Like Friend Without the 'R' - S1-E4
Trivia: Nergal is the villain introduced in this episode. "Nergal" originally was the name of the Babylonian God of Fire and Guardian of the Underworld. In the Bible, he is one of the demons allied with Satan himself. In the series Nergal is associated with the underworld and fire.
Trivia: They used real wolves (no CGI) to play opposite Bill Compton in the last scene of this episode.
Trivia: There are a lot of Greek references. Cerberus, Tartarus, a messengers boots (Hermes reference) and the princesses. Twilight is the Greek word for friend love, or Philia. Cadence is Eros, or romantic love. Celestia is Agape, the love God has for mankind. Well, Celestia is kind of a god. Luna is Storge, love of a mother and child. This works because she has helped Scootaloo and Sweetie Belle in a motherly way. She was a mentor to both of them.
Trivia: The season five episode "Independence Day" featured Chris Bruno's brother Dylan. The episode itself was Chris' first time as a director.
Trivia: When the Girardis are debating over what to watch for movie night, Will suggests one of the Godfather films. Joe Mantegna previously had a supporting role in The Godfather Part III.
Trivia: The song playing on the radio when Rosebud breaks in, 'I'd Take a Bite of the Moon For You,' references the episodes 'Alone Together' and 'Tick Vs. Chairface Chippendale.' The song playing when El Seed breaks into the botanical gardens is a jazzy version of the show's theme song.
Trivia: Shooting scenes with Salem proved pretty difficult for Kiernan Shipka, who discovered on set that she's actually allergic to cats.
Trivia: After modeling in underwear in an issue of Maxim magazine to promote "Drive Me Crazy", Archie Comics threatened to sue Melissa Joan Hart for breach of contract and to fire her from the show, as her contract stated she could never portray Sabrina naked, and the name "Sabrina" was printed on the cover of the magazine. Hart was able to make the situation go away simply by writing an apology letter.
Kiseki no fukkatsu! Yuyo no cosmo - S1-E5
Trivia: When Seiya falls down during the victory celebration and the three kids scream (the shot that comes before the one where Miho drops the picture) you can see briefly in the audience between the kids an easter egg appearance of Magical Princess Minky Momo, a character from a different anime. (00:13:50)
Trivia: John Wesley Shipp later played Barry Allen's father Henry in the 2014 TV series The Flash.
Trivia: The series was cancelled before the kids were able to learn who Ghostwriter was in his previous life. Producer Kermit Frazier revealed in 2010 that Ghostwriter was a runaway slave during the Civil War who was hunted down and killed while teaching other runaway slaves to read in the woods, and that his soul became trapped in the book that he emerged from Jamal's basement.
Trivia: **SPOILERS** When the demon takes over Ciri's body she dreams about being back at the party her grandmother had at their castle, and she sees her grandmother, Mousesack, her mother and her father. When she starts to question if it's really her grandmother, Mousesack and her mother all turn to ash and blow away. If you pay attention, you'll notice that her father does not turn to ash which is a foreshadow for later when it's revealed that he is in fact still alive.
Trivia: Arseface is based on James Vance, a teenager who made a suicide pact with his friend Ray Belknap, after the two became intoxicated while listening to the band Judas Priest. Vance survived his suicide attempt, but was left with a horribly disfigured face. His parents went on to unsuccessfully sue Judas Priest, blaming the band for their son's suicide attempt.
Trivia: The music used for the Octopus Dare computer game is an 8-bit rendition of the show's main theme tune.
Trivia: Jeannie Epper, Lynda Carter's stunt double's son, was bullied in school by his peers who didn't believe his mother played Wonder Woman. Lynda Carter heard this and invited them to the set.
Through the Rabbit Hole - S2-E1
Trivia: The boy's comment, "Everybody is kung fu fighting" at the ruined school dance, refers to Carl Douglas' song of the same name from 1974, two years before this episode takes place, following the fledging martial arts craze in America. This song has recently (in a slight variation) resurfaced in Kung Fu Panda.