- Approval of God: Madness Day is a time-honored Newgrounds festival where many fans of the series submit Madness-themed artwork, fanfiction, and fan animations. It is not uncommon for Krinkels himself to directly endorse fans who make awesome content. In fact, during Madness Day 2020, he streamed himself reacting to animations and artwork and was very receptive to other people's creations, going so far as to give each and every submission he reviewed a 5-star rating on Newgrounds.
- Creator Backlash: Krinkels regrets making Tricky Madness 2, which features things like Jesus graphically cannibalizing Tricky.
- Creator's Favorite: Krinkels said here that Sanford was probably his favorite character.
- Creator's Pest: Krinkels didn't like the Sheriff much, which is why he died in Avenger and never came back.
- Development Hell: As of its release in January 2019, Expurgation had been in the making for around seven years due to being sidelined in favor of Project Nexus 2.
- Fan Nickname:
- Fans have nicknamed Deimos' new form from DedmosRebuilt, "Rockmos".
- 2BDamned is often called "Doc", to the point where people think this is his canon name.
- The dimension where the Deimos Adventure mini-series takes place is referred to as "purgatory" by the fan Wiki, which already used "hell" for the dimension of Expurgation. "Purgatory" is canonically named "hell" in a poster from DedmosRebuilt, and Krinkels has referred to it as "Regular Hell", while the dimension in Expurgation is called "Auditor[Hell]" near the end of the episode when Hank is given powerful weapons.
- The art-style of the new characters' assets introduced in DedmosRebuilt is nicknamed the "Dissenter style" by fans, even though Dissenter is the second episode to use these new sprites.
- Follow the Leader: Bunnykill, Maximum Ninja, Xionic Madness and REALM, with several other series inspired by Madness Combat. Madness Combat itself is a descendant of stick figure fighting animations (Xiao Xiao, mainly).
- God Never Said That:
- It's common to assume that any character with a plain design is a grunt, and therefore that Hank, Sanford and Deimos were grunts before they got unique clothes. In reality, characters with plain designs can be many things, including civilians; "grunt" is simply the lowest rank in the AAHW and they just so happen to have a plain appearance.
- Plenty of people think that 2BDamned's name is Doc based on the description of DISSENTER, when in reality, the description implies that his name is anything but Doc. ("He's not even a real doctor, why do people keep calling him Doc?"). Doc is actually a Fan Nickname that people took seriously, and that Krinkels acknowledged in the description.
- Meme Acknowledgement: Krinkels took notice of the Fan Nickname of "Doc" for 2BDamned in the description of DISSENTER. Some fans have assumed that the name is now canon, but this has never been made explicit.
- Promoted Fanboy:
- Jose Ortiz, aka "Mindchamber" is long-time a Madness fan who worked on many tributes in the form of games, animations and 3D models inspired by the series. He is now one of Team Madness working on Madness Project Nexus 2 as a consultant and contributing artist.
- A Madness fan called Cethic sometimes contribute to the episodes' arts since Expurgation.
- Since Expurgation, a Madness fan named CturiX is taking care of the episodes' sound effects.
- Kelzad, a Madness fan-animator and creator of the REALM Series, made the design of Scrapeface in An Experiment.
- Referenced by...: The Mystic Woods from Epic Battle Fantasy 5 have statues of Tricky and two zombies.
- Sequel Gap: Present throughout the entire series, but the longest one was between Abrogation and Expurgation. Krinkels stated multiple times that Episode 11 was a constant work-in-progress, but that other ventures such as Madness Project Nexus 2 limited the amount of time he had to work on it. Abrogation was released in June 2011, Expurgation was eventually released in January 2019.
- The Wiki Rule: The Madness Combat Wiki
- Word of Dante: Some people believes that Krinkels' videos and some fan videos are actually one big shared universe, when in reality only Krinkels' videos are canon while those made by other people are simply fanon. This mostly happens with REALM and its characters since it's a fan animation series that uses the canon animations as plot points, so it's not rare to see people believing that Kelzad and Yeelon are in the cloning tubes from Inundation, despite them not being canon characters.
- Word of God: Krinkels sometimes answers questions about the Madness Combat universe on his CuriousCat account, though some of the answers are obvious jokes.
Trivia / Madness Combat