Franchise: Sonic The Hedgehog

Unlike past comic iterations of the series, the IDW Sonic the Hedgehog comics are considered canon to the mainline Sonic games according to writers Ian Flynn and Chris Hernandez, and take place after the events of Sonic Forces. On top of this, original characters in the IDW comics, including Tangle the Lemur and Whisper the Wolf, have been mentioned or made guest appearances in multiple games after the turn of the 2020s. While the comics do largely stay in line with the game series' timeline, the events of Team Sonic Racing and Sonic Frontiers serve as notable exceptions. Flynn originally claimed that the events of Team Sonic Racing took place at some point after Issue #32 and before Issue #43, but Sega has since released an official timeline placing Team Sonic Racing between the events of Sonic Lost World and Sonic Forces. Meanwhile, it was believed that issue #84 would be the first comic set after the events of Sonic Frontiers, as it marked the first appearance of Sage in the comics. However, writer Evan Stanley would later reveal that the game takes place sometime before the events of issue #68, with efforts to clarify the change being removed while reviewing issue #84's script.

On April 8th, 2022 (the American release date for the film "Sonic the Hedgehog 2"), former Archie Comics writer Ken Penders revealed that he was contacting his legal team in regards to the Echidnas and their backstory featured in the film. According to Penders, both Knuckles' unnamed father and the workings of the film's depiction of the Master Emerald were derivitive of two of his characters, Locke and Enerjak. Despite the fact that the powers of the game version of the Master Emerald had been established back in 1994 with the release of Sonic & Knuckles, Penders has claimed to have legal ownership over the ideas he created in 1996. However, as of March 2024, no lawsuit has materialized.

"TailsTube" is a webseries that began airing on March 22, 2022. Described as a "fun and informative, Tails-hosted show about all things Sonic", the series is hosted by a VTuber version of Miles "Tails" Prower, as he answers questions from fans about the Sonic the Hedgehog franchise, often featuring special guests from throughout the series. The series is notable for explaining various aspects of the series' lore. For example, the first episode debunks a popular fan theory that claims that Sonic's world and Earth are two separate planets, and the fourth episode confirmed the existence of a multiverse in the series, as well as establishing that "Classic Sonic" and "Modern Sonic" are not separate entities from alternate dimensions, instead being the same character's past and future variants. The sixth episode also sees Tails mention Jewel the Beetle and the Restoration, two prominent parts of IDW's Sonic the Hedgehog comic book series, further connecting it to the game series canon.

Archie's Sonic the Hedgehog comics introduced an original character named Geoffrey St. John, who at one point in the comic was in a romantic relationship with Sally Acorn, a character from the 1993 "Sonic the Hedgehog" animated series. This has been met with controversy from fans, because Sally was, at the earliest, 15 years old at the time of the relationship. While Geoffrey's age was never stated in the comic leading some to argue that a seemingly nonexistent age gap would be irrelevant, his creator Ken Penders claimed in 2015 that the character was 21 years old at the time of Sonic the Hedgehog Issue #46, which released in May 1997. In the Sonic-Grams fan letter section of that same issue, one fan letter asked if Sally is 14 or 15 years old, with the editor Justin Freddy Gabrie confirming she is 15 (it should be noted that while Gabrie incorrectly lists the wrong age for Bunnie Rabbot in this response implying others could be wrong, Sally's age is consistent with her being the same age as Sonic throughout the comic). All of this information is made significantly worse when Geoffrey is shown making out with Sally during the same issue, which they also did in other issues around this time. To complicate this further, in Issue #20 of the spin-off comic Knuckles the Echidna, which released in January 1999, it's shown that Geoffrey is older than Sally's older brother Elias Acorn, who was 21 at the time of the relationship, through two scenes. The first is when Geoffrey calls him a "kid" in the present, and the second is through a flashback showing Geoffrey as a physically older child than Elias, who was 5 years old in this flashback. The two aforementioned issues were co-written and solely written by Penders respectively, meaning that even if his original claim of Geoffrey being 21 was incorrect, it implies that he retconned Geoffrey to be older than that at the time, making the age gap larger.

This controversy worsened even further when Penders revealed in 2019 that he had planned at some point for a story involving Geoffrey taking Sally's virginity. While he acknowledged that this was a story that ultimately couldn't be told in the comic, as content found in the series had to remain within the realm of a G-rating, he attempted to justify the relationship in the context of a historical drama setting by saying:


However, considering the cited source material, this justification is fundamentally wrong as the actual implied age gap would be larger than the 4 years Penders suggested (Sally's 15 to Geoffrey's at least 21), leading fans to accuse Penders of making the character a pedophile, and by extension accusing Penders himself of being a pedophile.

In August 2016, Scott Fulop, a former editor and writer for Archie Comics' Sonic the Hedgehog comics (whose notable contributions include the characters Mammoth Mogul and the Fearsome Foursome), began pursuing legal action against Archie Comics and Sega of America for the unauthorized use of his characters and reprinted stories. In the lawsuit, Fulop claimed he was owed six figures in royalties for his creations (having made 15 characters for the comic), and gave nearly a thousand examples of Archie either wrongly using his characters or reprinting stories involving them, and how he (through his company Narrative Ark) sought damages for copyright infringement from both Archie and Sega due to them apparently failing to compensate him for his works. He also alleged that Archie engaged in "deceptive business practices, unfair competition and unjust enrichment." As part of this, he attempted to invalidate copyrights on his characters filed by Archie in 2011 in response to fellow former writer Ken Penders' own copyright filings, who had also infamously sued Archie for similar reasons. However, in September 2017, the judge ruled in favor of Archie Comics due to various flaws in Fulop's claims.

Lanolin the Sheep, a character introduced in IDW's Sonic the Hedgehog comics, was created by artist Adam Bryce Thomas as a background character in Issue #2. He would continue drawing Lanolin in subsequent issues he illustrated for, often with a new look. Comic writer Ian Flynn would eventually confirm her name on Twitter. She even appeared in an early draft of Issue #30's A cover (drawn by Thomas), but was edited out in the final version. Starting with Issue #57, Lanolin began to have a supporting role in story arcs: according to Ian, this is due to how her appearances had evolved to the point of gaining a role in the story, and her increase in prominence led to a more developed personality. By her own admission in Issue #58, she is "bossy and inexperienced", being rather new to her role as a leader. Despite this, some fans have criticized the character for having a tendency to act as if she is just as experienced as her peers (i.e. critiquing Silver in Issue #63 despite having no experience with psychokinesis, and her interactions with Tangle in Issue #62 giving the impression that she had a genuine problem with her, despite the scene's comedic nature). This has resulted in comparisons to Sally Acorn, a character from the 1993 "Sonic the Hedgehog" cartoon who was a main character throughout the Archie Sonic comics, due to their status as no-nonsense leaders able to keep even Sonic in line. These similarities also led some fans (particularly those who don't like Flynn's writing) to accuse that Lanolin was an attempt to replace her despite having gone on record stating that he wanted to incorporate Sally and the Freedom Fighters into the IDW comics.

In a post titled "SONIC THE HEDGEHOG: One Year Later...", Karl Bollers (a former writer for Archie's Sonic the Hedgehog comics) revealed numerous plans that he had intended to include in the comics following Issue #134 that were never used, such as:

• Sonic and Amy becoming a couple after being stranded at sea together, keeping it a secret from Sally.
• Tails reuniting with his parents by traveling into space on a modified Tornado.
• Amy's origins being explored in a fuller adaptation of Sonic CD.
• Knuckles departing Angel Island after learning that his presence exposes the location of the Master Emerald, going on a global pilgrimage to learn martial arts and battling a Dr. Eggman controlled-Monkey Khan while himself under the control of the Iron Queen before discovering the Master Geode.
• Sally being a pawn in a villainous plot by the corrupted Source of All and Ixis Naugus to prevent the future first previewed in "Sonic In Your Face!".
• Bunnie and Antoine breaking up due to a change in Antoine's personality, with Bunnie's origins later being explored and her true name being revealed as "Scarlette O'Hare" (which may have served as the inspiration for Scarlette Rabbot from Sonic Universe's "Fractured Mirror" story arc, and Bunnie's codename when she was in the Metropolis Egg Army in Issue #255).
• Antoine gaining his scar due to an accident with a knife and becoming a villain after allowing himself to be possessed by a corrupted Source of All in hopes of winning Bunnie back.
• Rotor retiring from field duty in order to pursue a role analogous to that played by "Q" from the James Bond franchise.
• The Source of All surviving Robotropolis' destruction and reconstituting itself in a remote mountain range, where it began to exert control over King Max, brainwashing the Arachne Clan and another group of Spiders known as the Strand, and possessing Antoine while under the control of Ixis Naugus.
• Locke and Lara-Le putting aside their previous disputes to help raise Kneecaps after his father Wynmacher ends up in the Egg Grape Chamber.
• Dr. Robotnik kidnapping Hope Kintobor under the pretense that he is the only correct choice to be her legal guardian, while using her as bait to lure in Shadow.
• Ixis Naugus attempting to return by transforming Max's body into a duplicate of his own, only to be thwarted by the destruction of the Crown of Acorns.
• Mammoth Mogul beginning to age rapidly due to his original Chaos Emerald running out of energy, forcing him to seek out alternative sources through illicit archaeological expeditions and hiring mercenaries like Nack the Weasel. The Master Geode, a powerful gemstone that would fulfill Mogul's needs, would be contested by him, the Iron Queen, Robotnik, and Rouge the Bat.
• Nate Morgan surviving the destruction of Robotropolis and being de-Roboticized by the Bem, returning as Coconuts' amnesia-addled ally, who creates a new Metal Sonic, Metal Amy, Metal Knuckles, and Tails Doll that are mistaken for Robian versions of the heroes.
• Snively taking up a fifteen foot-tall mechanical battle suit and the alias "Skarkus" in pursuit of revenge against Robotnik for leaving him alone against the Xorda, leading to an alliance between him and Shadow.
• A.D.A.M. and Nicole becoming romantically involved, leading to A.D.A.M. seizing control of the Shadowbot army and leading them from New Megaopolis to Knothole.
• A new Dingo Regime leader named Colonel Mange being introduced, with Croctobot, Jack Rabbit, and Gala-Na being reintroduced as Robotnik Sub-Bosses over Downunda, the Great Desert, and Albion. This would have led to the disappearance of the Downunda Freedom Fighters and a confrontation involving the Mercian Freedom Fighters.
• Evil Sonic coming to enjoy impersonating Sonic and enjoying the love of his parents and adulation of his people, leading him to plan to eliminate Sonic and permanently take his place.

Additionally, in the aftermath of Ken Penders' lawsuit against Archie Comics, Bollers has confirmed that he now owns the rights to all the characters he created for the comics, such as Mina Mongoose, Ash Mongoose, and Hope Kintobor.

On June 23, 2016, Sega released a YouTube video titled "25 Years of Sonic the Hedgehog!", a video going through an abridged timeline of the Sonic franchise's games on the anniversary of the first game's North American release. Strangely and controversially for a celebratory video, the video makes multiple snide remarks towards the games featured, some that are innocent in nature (such as Sonic the Hedgehog 3's description mentioning the "Knuckle Chuckle" meme and Sonic Heroes' description referencing the infamous "Look at all those Eggman's Robots!" translation error) while others very directly mock flaws and criticised elements of the games, such as Sonic 3's referencing the "barrel of doom", Sonic 3D Blast's description poking fun at how the Flicky AI would run away from Sonic, 2006's Sonic the Hedgehog not even receiving a description and simply showing its loading graphic, and Sonic Colors' description stating that it is where "Sonic in 3D finally finds its footing", a statement that is technically true when looking at critical reception, but tends to aggravate fans of 2000s-era Sonic games.

Since Sonic was very popular in English speaking countries, one of Sonic's quirks in Japan (performed by Junichi Kanemaru) is that he may speak English at times, unlike other characters.

The human body has a Gene called "Sonic Hedgehog", named after the character. The gene has an inhibitor (something that stop the process of a gene) named "Robotnikinin", named after Sonic's Nemesis, Dr. Ivo "Eggman" Robotnik.

Sonic's shoes were inspired by Michael Jackson's boots and the color scheme of Santa Claus. Sonic's personality was inspired by Bill Clinton.

Jon St. John, the voice of Duke in the Duke Nukem games, also voiced Big the Cat for several Sonic games starting with Sonic Adventure up until Sonic Heroes.

In 2010, SEGA de-listed every single Sonic game with anything less than an average Metacritic score so that they could not be bought new at retail or downloaded from console-based online services. This was in order to increase the value of the franchise to prepare for a "comeback". Ironically, Sonic Free Riders, released the very same year, has a below-average Metacritic score of 47 out of 100.

In 1993, Sonic the Hedgehog became the first video game character to appear as a balloon in the Macy's Thanksgiving Day Parade. The balloon popped on it's one and only flight by being pushed into a lamp post by strong gusts of wind, hurting a kid and a police officer on it's descent. Because of this incident, the balloon was retired.

A second Sonic balloon based on his modern redesign was used between 2011 and 2013 to celebrate the series' 20th anniversary, and was brought back one more time in 2021 in accordance with the series' 30th anniversary.

In the 1990 arcade racing game Rad Mobile, there is an air freshener of Sonic that is hanging from the rear-view mirror. This marks the first time Sonic has ever made an appearance in a video game, which, interestingly enough, predates the release of Sonic the Hedgehog in 1991.

The trademark Sonic Emblem, as featured in Sonic the Hedgehog and subsequent installments on the Sega Genesis, is based off of the logo from the 1988 Sega arcade title, Wonder Boy III: Monster Lair.

There is a series of posters in several Sonic games advertising a movie series called "Chao in Space". These posters also feature the names of various Sonic characters.

In all of the Sonic Riders games, there is a gear titled "The Crazy", which resembles a taxi. This is most likely a reference to another SEGA series, Crazy Taxi.

The English script for Sonic Colors, as well as other 3D Sonic localizations up to Sonic Forces, was partially written by Ken Pontac, known for working on children's programming such as LazyTown, Arthur, and Bump in the Night (the latter of which he co-created), and Warran Gaff, best known for his and Pontac's work together on the adult cartoon Happy Tree Friends. Pontac and Graff's renditions of Sonic were significantly more lighthearted than earlier or later 3D games, a highly requested shift at the time that would prove controversial after a few games. This disdain for Pontac and Graff's writing style led Pontac to decline from doing Sonic panels at conventions out of fears that vitriolic Sonic fans will visit and harass him.

Dr. Robotnik was created to be the opposite of Sonic, and to be the bad guy. During the development of the game, there was a growing debate between developers and environmentalists, and Robotnik was created to represent machinery and development, as apposed to Sonic, who represented the environment.

His egg shaped redesign came from Naoto Ōshima wanting to give the characters designs that were easy enough for kids to draw.