- Actor Allusion: Everyone in the main cast have previously starred in comic-based movies or at least movies that have had comic tie-ins. Liv Tyler was in The Incredible Hulk, Ellen Page and Kevin Bacon were both in X-Men movies (X-Men: The Last Stand and X-Men: First Class respectively), Rainn Wilson had a cameo in Transformers: Revenge of the Fallen, and Nathan Fillion is the current go-to voice of Green Lantern and played Captain Hammer.
- All-Star Cast: Rainn Wilson, Ellen Page, Liv Tyler, Nathan Fillion, Kevin Bacon.
- Creator Cameo: Director James Gunn plays Satan (or Demonswill) in The Holy Avenger's public access television show.
- Doing It for the Art: It is a very low-budget independent film, so everyone involved was paid scale.
- Dueling Movies: With 2010's Kick-Ass, which had a similar premise of dark, realistic superheroics. Super is even darker and more grounded in reality. Both Mark Millar and Gunn are friends in real life, with the former defending the latter's work when accusations of copying came up (both films were developed around the same time independently of one another). Millar even screened Super at his own Kapow! comic convention in London. There's a third movie to factor into this with Defendor, which played at festivals before either film came out. Super could be considered half-way between Kick-Ass and Defendor, or maybe even more similar to the latter in many aspects.
- Hey, It's That Guy!: Dwight Schrute, unsure about buying a bunny from Lindsay Weir, is inspired by Malcolm Reynolds's evangelical Christian TV show, and teams up with Juno to save his wife Arwen from the clutches of evil drug dealer Ren McCormick and his minion Mr. Svenning (and his minions Benny Que & Sammy Capulet).
- Playing Against Type: One of the reasons why Ellen Page took on the film was because she was tired of getting typecast in Juno-type roles.