#sonicheadcanons

The anthropomorphic animals in this universe are called "Faunans", because fauna is a colloquial term for the animal life in a place

Sonic grew up in the Christmas Island orphanage starting at age 3 1/2 due to his dad accidentally drowning at sea during a storm they were both in, which laid the groundwork for Labyrinth to give him full blown traumatic aquaphobia

Mighty and Ray became the first two people to successfully catch up to and keep up with the fastest thing alive, leading to the three becoming a trio of little troublemakers

Adding onto the childhood friend angle, the armadillo and flying squirrel are the only people who can call Sonic "Nicky" until Sonic informs Tails of the nickname after Adventure, though the fox keeps it for when they're alone

an 11yo Sonic first went Super as he was falling to Earth after blowing up the Death Egg in Sonic 2, surprising both himself and the 4yo fox piloting the Tornado

The Super Emeralds and thus, the Hyper State are only possible on and above Angel Island, due to the presence of the Master Emerald

Out of all the small animals in the world, Flickys are the most sensitive to Chaos Energy

Combining the previous two, the first person to go Hyper was Mr. Miles "Tails" Prower, sharing the immense energy with four Flickys who followed him and Sonic into the Death Egg

Mania was erased from everyone's memory in a last ditch effort by Heavy Magician to lay in wait to eventually defeat Sonic forever. Her plan worked until (now 12)Sonic got sent into when he was supposed to be 17 and also dead(?), awakening everyone's memories upon finding one of the Phantom Ruby copies Ivo made. This is also why the Present Sonic of the time was able to act like he hadn't been tortured, due to the sudden rush of "Hey wait... I've seen that thing before!"

Sonic got the Tornado in between Sonic 1 and 8-bit Sonic 2, as a gift from Ray, since he decided he wouldn't be using the family biplane since he can natually, or unnaturally, fly. Thus, he gave it to Sonic after hearing Dr. Robotnik was still causing trouble

Until he was 6(or until Adventure), Tails had a very slight rhotacism. The only person Sonic told was Knuckles, who asked why he kept getting called "Knucwes"

Sonic actually ran into "Surge" and "Kitsunami" before Starline got his barbs on them. Kit, actually name Karrent, lived in Marble Zone with his family, meeting the hero when the fennec fox was 7

He met the tenrec later, while adventuring through Westside Island, both Sonic and Tails met Spark the Tenrec along with her uncle and cousins. She was just a dismissive 9yo who thought they were both weirdos, especially Sonic, who she instantly dared to clean up the stables in under an hour

Metal Sonic Kai was originally supposed to have two power sources. The Chaos Rings, and a 3yo Faunan Bee, native to Northeast Isle/"Carnival Island", after removing him from his hive, of course

Said power source was then "stolen" by a 13yo chameleon and an 17yo crocodile, who decided after the ordeal was over to try and raise him themselves, starting the Chaotix Detective Agency! ...Much to the chagrin of Vector's parents, Elwood and Jordan, and Espio's clan in Mimeiratsu[Japan](A direct combination of the word for early dawn(mimei) and lively(ratsu))

Since he hadn't actually been named yet, Vector called the little guy "Charmy", since it was his "charm"(the innate sense most people have for protecting children) that got Espio's attention in the first place