OJ and Paintbrush (Taylor Grodin) become teammates and leader figures to The Thinkers in Season 3.
Bow and Dough (also Taylor Grodin) are allegedly siblings who both end up getting Killed Off for Real and stuck in Purgatory Mansion, though Bow insists they’re not related.
Knife and Paper (Justin Chapman) start off as good friends, though Paper ends up holding a grudge against Knife for dropping a piano on him and eliminating him in Episode 2.
Salt and Pepper (Alexa Chapman) are "BCFFs" (Best Condiment Friends Forever).
In addition to voicing Apple, Adam provided the voice of Marshmallow for most of Season 1, and they start off as unfriendly rivals due to Marshmallow ruining Christmas for Apple. They make amends in "Marsh On Mars", though at that point Marshmallow is voiced by Dee Cashin.
In one livestream, Taylor Grodin (a prominent voice actor/writer/animator of the show at the time) watched the earlier episodes of Season 1 and audibly cringed whenever Toilet Humour showed up. He also confessed that if he were to go back in time, he would remove Bomb's Speech Impediment.
According to a Tumblr post, Taylor Grodin isn't fond of how Paper's character in Season 1 was handled (a sentiment plenty of fans share with him) and admits that he would rewrite his arc if given the opportunity.
Likewise, in 4Seeing the Future and Double Digit Desert, Pickle and Nickel respectively call MePhone4S and MePhone4 "MeTard." Due to the insult doubling as an ableist slur, said scenes were removed as well.
“The Taco Show” isn’t remembered fondly due to the large amounts of gross out humor, and it was eventually taken down by the creators.
In a July 2nd 2016 AMA on Deviantart, Soap has been confirmed as having OCD, while Suitcase has conversely been denied as having Aspergers, though that doesn't stop the latter from still being Diagnosed by the Audience due to her strong hallucinations.
In an interesting subversion, Brian Koch and Justin Chapman have respectively approved of fans interpreting Fan and Tissues as autistic, but have not outright stated that they’re canonically on the spectrum.
Fake Brit: Taco speaks with a British accent from the Season 1 finale onwards, but all of her voice actors seem to be American.
In Memoriam: "Alternate Reality Show" is dedicated to Lennard Katz, Adam's grandfather who passed away during production.
Multiple Languages, Same Voice Actor: Yin-Yang is voiced by Marco Bonomo, who also recommended him, in both the English and Italian versions of Inanimate Insanity.
According to Adam, a lot of voice actors just straight up dropped all contact with him, forcing him to either voice certain characters himself, or get the voice actors he actually had on hand to voice them.
After Taylor Grodin was fired from the Inanimate Insanity crew in 2022, Paintbrush and Bot's voice actors were replaced by Jazzy Oliver and Shooshies, respectively.
Out of Holiday Episode: Lampshaded in "Let Er' R.I.P.". Despite the episode being released in February, both MePhone4 and Nickel treat it like a Halloween Episode, with pumpkins as the elimination prizes and a challenge based around investigating a haunted house. The other characters repeatedly point out that it's not actually Halloween, to no avail.
Paintbrush, who is nonbinary, was originally voiced by Taylor Grodin, who is bisexual, and has since been voiced by Jazzy Oliver, who is a trans femme non-binary lesbian using she/they pronouns.
Bot, who is nonbinary, is voiced by Shooshies, who is also nonbinary. They were also originally voiced by Taylor Grodin, who as stated above, is bisexual.
Reality Subtext: Following the termination of Taylor Grodin's work on the show, the characters he voiced were in need of new voice actors. "I Am Chocolate!" includes a subplot where one of them, Bot, ends up getting a voice change courtesy of Test Tube to reflect this.
While they're not actually related, Tea Kettle treats Nickel and Balloon very much as if they're her children, with her relationship with Nickel coming across a lot like a strict mother with a rebellious son. The two are voiced by real-life mother and son Jill and Adam Katz.
Salt and Pepper (currently voiced by Alexa Chapman), Soap (Kacie Chapman), and Microphone's (Hailey Chapman) voice actresses are sisters in real-life, and their brother (Justin Chapman) voices Knife and Paper.
MePhone4 is voiced by Mark Katz, Adam's father.
Real Life Writes the Plot: Lightbulb's Extreme Omnivore tendencies are a reference to a story involving her voice actor, Michael Bruzzone, where he went to a bowling alley with Adam Katz and accidentally ate part of a receipt.
Release Date Change: "The Great Bluish Bakeoff" was originally supposed to release on October 28th, 2023. However, it was delayed to November 3rd due to solidarity events involving the violence in Palestine.
The original voice actor for Balloon became infamous for hacking into the creator's account and deleting all of the videos from his channel. Needless to say, Adam promptly cut ties with the voice actor and Balloon was eliminated the next episode. Balloon didn't even get a spot in the end credits of the first season (he does appear in it, but only for a split second), leaving him as the only voice actor to not receive any credit.
MePad was originally voiced by Beatrice the Golden Witch. In May 2018, fans learned that she was openly into lolicon, in addition to complaining about Patreon's new guidelines banning things like lolicon, incest, and bestiality. She was replaced by Justin Chapman (the voice of Knife and Paper) as of "Mine Your Own Business".
LorenTzel, one of the animators, was fired for allegations regarding racism at the 2022 BFDI + II Meetup; along with this, both Taylor Grodin, the voice of Paintbrush and OJ among other characters, as well as a director and animator and Ame were fired alongside for having spoken in support of Loren (or in Taylor's case: Loren's apologies) after the allegations hit. There are currently many strong fights on social media pages from fans who fight whether or not Taylor Grodin deserved to be fired due to only supporting the apologies rather than the actual actions of Loren.
Saved from Development Hell: The creator was almost forced to can the series due to him and most of the other crew members starting college. Luckily, a successful Kickstarter campaign was able to save the series from the cancellation, and a new episode aired shortly after.
Schedule Slip: Happened due to a mixture of the episodes being longer (around 18-20 minutes) and the animators having to focus on school work. In Season 2, the show stopped even having a schedule.
Shipper on Set: Jazzy Oliver, current voice of Paintbrush, has been outspoken in her support for the ship between Paintbrush and Lightbulb. Because of the lines in Season 3 about Lightbulb and the popularity of the pairing in the fandom, they actually thought it was canon until they watched the previous two seasons.
Throw It In!: Box was originally just a prop used in a promotional image for the second season but then became an official character when the creators discussed how funny it would be to have an inanimate cardboard box as a contestant, as well as just curiosity as to how long a character who did literally nothing would last.
Trans Character, Cis Actor: Before being Darrin'd by nonbinary voice actors Jazzy Oliver and Shooshies respectively in 2022, Paintbrush and Bot, who were revealed to be nonbinary, were voiced by the cisgender voice actor Taylor Grodin.
Word of Gay: Subverted. Justin Chapman "headcanons" (even though he's part of the crew) that Knife is pansexual, and Paper is gay. He also states that Marshmallow is, in his opinion, the "second gayest"◊, after Paper.
Balloon has also been confirmed to be on the Aromantic Spectrum by Justin on Tumblr.
Lightbulb was confirmed to be trans by Brian Koch in a Q&A livestream.
Alternative Title(s):Inanimate Insanity Invitational
, Soap has been confirmed as having OCD, while Suitcase has conversely been denied as having Aspergers, though that doesn't stop the latter from still being Diagnosed by the Audience due to her strong hallucinations.
