Sonic Headcanons

[SnooPigu]

Shadow is secretly Silvers mentor when he time hops into the present and possibly still this role to him in his future timeline. Shadow being immortal knows that humanities reliance on Sonic is foolish as the hero doesnt really have dependable actions being a freedom loving heonist without a care in the world, so shadow trains Silver, someone whos shares the same dutiful views of protecting the planet and takes it very seriously, plus it gives Shadow time to bond with someone not a sassy asshole who annoys him to no end, and Silver is probably the strongest sonic characters, so shadow is the besy one to teach him power of chaos manipulation and become a powerhouse like he is.

[SenEDDtor Missile]

Alternate Eggman headcanon:

I say alternate because I don't know how much this would apply to current canon (for whatever would constitute as canon at any rate), but basically, Eggman does not and is basically incapable of seeing the potential of his robots becoming (or being) actual people, and this is arguably tragic for himself and the sentient robots that he created, like Gamma and Omega.

All of this is born from one major aspect of Eggman's psyche and motivation: a craving for absolute adulation and attention. More specifically, adulation from other humans/anthros.

His egomaniacal genius, poor and checkered family history, and his failings as a person meant that he could never form any meaningful connections with anyone personally, and thus he not only turned to a desire for world domination, but also builds his robots in order to have a facsimile of people who would want anything to do with him. Being a genius however, he does actually create robots who turn out to be capable of developing their own sentience, and thus essentially people.

However, and here is where the tragedy for Eggman comes into play: For all of his brilliance and success at essentially creating a new sentient life in robots like Metal Sonic, Gamma, Omega, MAAAYBE Orbot and Cubot, and so forth, Eggman himself simply does not recognize them as people.

His mindset cannot accept them as people, because in his mind, years of craving the adulation of his peers has conditioned him to see any adulation from his own creations as hollow, BECAUSE they're his creations. After all, how authentic can their adulation possible be if HE's the one who programmed them, at least in his mind. As a result, even if they demonstrate sentience, he cannot accept any adulation except only on the most superficial level.

It's tragic for him and his creations, because in many ways he has the ability to create the family who will give him companionship and friends and all the adulation he could ever want, but his own warped psyche can never accept anything except flesh and blood peers for the attention he craves.

For his creations, it means that no matter what they do, they'll never get any true love or value from their creator because he does not see them as anything except disposable fodder at worst, and at best his favorite shiny toy at best.

Omega can never gain any respect/be seen as the mightiest of Eggman's machines because Eggman does not respect Omega on any level. All he sees is a robot who does not obey him absolutely that needs to be destroyed or forcefully removed.

Gamma's contributions in the past gained Eggman's favor, but he is now essentially forgotten.

Orbot and Cubot can help and enable him all they want, but they'll never be seen as anything except nuisances regardless of how helpful they are.

Metal Sonic might be one of Eggman's most prized weapons of war, but that favor can easily turn against Metal if he ever betrays him, and Eggman's favor is mercurial even at the best of times.

[EmTiven01]

Sonic used to be a lot more arrogant and egotistical before softening up to become what he is today. (Think Lightning McQueen from Cars)

[Dr. Mechano]

Mario & Sonic at the Olympic Games (2007) shows us Eggman is capable of powering up with a Chaos Emerald directly, in the Dream Race event.

Using it makes him shiny, really fast, and invincible for a brief period - i.e., exactly the same effect as when a non-hedgehog character like Tails or Knuckles goes super. They don't get the full golden treatment like Sonic does, but all those other things do happen.

Though being just one Emerald instead of the whole set, it fizzles out really quickly. 

Anyway, what I'm saying is M&S 2007 has Super Eggman.

[EmTiven01]

Eggman has a niece who looks just like his late cousin Maria. And much like Hope Kintobor from the Pre-Reboot Archie Sonic comics, she's the only living member of the Robotnik family who ISN'T an evil maniac.

[charmsb]

Shadow is immortal (in terms of protecting himself from aging anyway) and exists in the future with Silver, but Silver doesn't tell present Shadow that. That's because the world, including Silver (reluctantly) is going against him, just like Mephiles said.

[Dr. Mechano]

A thought to solve the Blaze/Silver/Eggman Nega conundrum.

What if the “alternate dimension” is just the future? Like, if you jumped through a portal to some super different-looking earth you might mistakenly believe you went to a parallel universe too. But actually, it was just time travel!

This allows Blaze to exist in the future in 06, and allows Eggman Nega to be Eggman’s descendant without contradicting the Rush games.
 

Also something happened to the Chaos Emeralds in that 200 year gap, I guess.

[Multikaris]

The name of Guardian (from Sonic At The Olympic Games for iOS) is an acronym, standing for

 

Gather Ultimate Athletic Data Infuse Activate & Nullify. This makes the name sound less generic and random, and describes its power to copy the talent of the best athletes and weaponize it.

 

The “monster” machine from Team Sonic Racing is also an acronym; standing for;

Massive Offroad Nightmare Speeding Terrain Elimination Robot

[CertifiedNobody]

I have a decent amount of Headcanons regarding Silver's Future

In 200 years, Shadow is the current G.U.N Commander, along with being Silver's grandfather. Shadow's son/Silver's father resembles Silver's golden chested concept art and goes by the name Venice. 

E-123 Omega and Commander Shadow are still friends even with Rouge being long gone, though Shadow still checks up on her descendants every few years. Her descendants know little about him aside from the fact that he knew Rouge, and he never elaborates beyond telling them how they remind him of her. Her youngest descendant is a reporter named Nails.

Gemerl is still alive in Future Earth, though he's stood by Cream's grave for over a century. He's covered in vines and dirt, but hasn't shut offline due to a solar generator inside him. Shadow sometimes sends down a mechanic or two to make sure he's okay.

Instead of accepting a normal afterlife, Sonic's soul bounces across the multiverse like a beam of light, with him finding new people and places for eternity.

Knuckles died still guarding the Master Emerald, never failing his mission even after losing a lot of friends. By the time he died, the only ones that were aware of his passing and able to grieve it were Tikal and Chaos. Without a guardian, the Emerald reincarnated Knuckles as it's new physical form, He essentially evolves into Chaos Knuckles/Enerjak as a result of becoming a living Master Emerald. With that, he's relieved of his role of guardian, and is free to leave, though his power makes him a target to the evils of Silver's time.

Eggman Nega was originally an ambitious young man who spent his life attempting to redeem his family name. Decades of being blamed for his ancestor's actions pushed him further from society until he became the villain people treated him as. Silver even interned at his company, Negacorp, before it was bought out by Prower Technologies.

Metal Sonic went dark after Eggman's (peaceful) death, but the people in towns and cities near ruined Eggman bases will occasionally report sightings of a "metal blue hedgehog", with little evidence beyond grainy, blurry pictures. Metal still lives, but he blocks out the outside world and replays all of his positive memories of Eggman, the empire, and even fighting Sonic on loop, as they were the only times in his life where he felt he had a place.

Orbot and Cubot started a podcast and are also well known celebrities.

Spoiler

I like these ideas enough that I plan on putting it in my own animations in the future.

I also have a few none-future themed ones:

Sonic Chronicles is canon, and fits into the universe somewhere. Maybe before Forces?

Dodanpa from TSR was actually Infinite, and the race courses were nothing more than elaborate illusions intended to keep Sonic distracted while the Eggman Empire recovers after their massive losses from the Eggman War.

Shadow "died" in SA2 because he took off his Inhibitor rings to save the Earth.

Manic exists in the Game canon, but his portrayal is closer to how he was shown in Sonic Revved Up.

 

[Multikaris]

The Super Genesis Wave at the end of the post-SGW Worlds Collide effected the games instead, turning them into the IDW Comics, because there wasn’t much left to erase in Archie’s universe. The games continuity we see now is actually the Boom universe, effected not only by the Super Genesis Wave but also the paradox Shadow tried to cause in the final episode. 
 

Alternatively, if the Archie universe did become the IDW universe, the Super Genesis Wave’s effects on the games were the creation of the Classic/modern split, Two Worlds, etc. 

 

From there, it is entirely possible the Freedom Fighters would be on Classic Earth or the Classic Sol Dimension, hence why we never see them. 

[SolidSurgeTT]

Sonic is a multiversal constant that gets his powers from the residual energy that is connected to the creation of the Chaos Emeralds. There may be other creatures that also draw their abilities from the Emeralds but there will always be a super-fast blue hedgehog in every reality.

[babsiwuff]

Not a headcanon exactly, but I knew people who worked on the Archie comic and they stated that Tails’ status as the Chosen One would result in him growing extra tails as he got older.  I liked the idea of Tails being a kitsune and was disappointed that this never happened.

[Sulver Studios]

Amy can't swim, and also has hydrophobia (although she manages to calm herself down most of the time, although there is times where her hydrophobia is too much to handle and she runs away in fear).

As for how she could swim in Sonic X and the Olympics games, well that's super easy to explain

Amy has 2 sets of rings, her normal rings (which she uses outside of swimming of course), and shiny water wings (which she uses in the beach episodes of Sonic X and the Olympics series)!

[Dummy Bear]

The Mystic Ruins and Station Square are located on Westside Island, and thus the city in the background of Chemical Plant is actually Station Square itself.

[moonarcana]

I ignore the official ages for pretty much everyone except Cream because they all kinda act like teens, and the idea that Tails is an 8 year old in the serious stories of SA2-06 is just impossible to except. 

I still see Sonic and Knuckles as teens but closer to 20 than to 15. Tails and Amy 14-16 (Amy would be older regardless), and everyone else's age adjusted to keep the same age gaps that exist in canon with Sonic.

I get why they're so young canonically, but that's just always bothered me, especially when Generations got announced 

[MGA_Gamer]

Sonic hates being hugged.

Whenever somebody wraps his/her arms around him (Mostly Amy!) He will freak out and struggle to get out of the hold. This is because he likes his own personal space, and he hates being restrained in any way.

There is, of course, one exception... Tails!

Sonic and Tails will occasionally hug each other. Usually it happens when one or the other is feeling scared or upset about something and needs somebody to comfort them. Sonic doesn't mind though, since Tails' grip isn't as tight as, say, Amy's, and the fox's soft, warm fur provides an extra layer of comfort. It helps that Sonic enjoys hanging out with Tails in general.

[Duelistic Nature]

The chaos emeralds do exist in the story book world of Sonic and the Black Knight.

The reason Sonic was able to transform into Excalubur sonic like he was super Sonic is because I'd like to believe the chaos emeralds from this dimention were used in the creation of the sacred weapons.

However I don't think the weapons are substitutes for the emeralds in this world like they are in others (sol emeralds and the world rings). We only got shown 3 weapons (4 if you count the two blades knuckles carries, Galatine) and those 3(4) combined with Caliburn and the mindset that Sonic just had to do what he had to do, triggered the super transformation. Remember it's stated the chaos emeralds turn thoughts into power and a life and death situation provokes strong emotion and strong thoughts. It's not a full super Sonic state he gets, because he gets clothed in golden armor, but retains his blue fur color underneath.

Where more weapons are combined a more super like state can be achieved like Excalibur Sonic. Much like how the chaos emeralds amplify the powers of one another when in close proximity (5 to wipe a city off the earth, 6 to blow up half the moon, 7 to destroy a plannet in the case of the eclipse cannon).

This leads me to hypothesise that the weapons were forged using the emeralds from this world, and maybe contain slivers of the emeralds. This would explain why shadow could use a minor version of Chaos control which he dubs Chaos punishment without having to use an actual chaos emeralds.

 

[Rognog]

The landmarks of the classic games (1,2,3, and Chaotix) were all once one large landmass but due to Chaos being released they split apart and became islands.

Sonic's world is mainly made up of numerous islands, which is why sonic has the tornado

Sonic can only run a bit faster than mach 1

Mobians tend to live in more rural and natural environments while humans tend to live in cities

All the super powerful god like entities (Solaris, Dark Gaia, Time Eater, etc) all originate from the special zones and just traveled to the regular universe in a similar method to how sonic travels to the special zones.

Mania was created due to generations and the events of the future games are no longer going to happen in that timeline

Tails is not as smart as Eggman