Sonic TerraSphere is a fan-made audio drama created by @oddlyunaware that surrounds Sonic, Shadow, and Silver as they go on a world-hopping adventure to save their planet.
Starring several famous voices across the Sonic fan community, this series is shaping up to be one of the biggest adventures yet for our blue hedgehog!
Interested in getting into this project? Watch what we have so far in full on the official YouTube channel here!
Want to chat with other fans of the drama, or just Sonic nerds in general? Join the discord here!
Check out our Bluesky for even more fun announcements, here!
Got questions about the story and lore? Ask away on this very blog, we'll answer as soon as we can! We'll also update the blog with selected fun facts about the characters and world— so keep an eye out even if your question isn't answered!
~DIRECTORY~
Official Releases Tag
Character Bio Tag
World and Lore Tag
~GUIDELINES~
This blog and project is a safe space for all genders, sexualities, races and religions. Please do not use TerraSphere's content to spread hate speech or political bias towards others.
We do not wish to engage in fandom discourse. Please refrain from using any TerraSphere content as ammunition in online arguments.
Do not use any of this project's content for generative AI purposes.
Always remember to credit the wonderful TerraSphere team when sharing content related to the project! Don't claim anything we publish as your own without express permission.
Sonic TerraSphere belongs to @oddlyunaware [link to main website]
CONTENT WARNINGS: Heavy Themes, Descriptions of Violence
The Hates Shadow Club belongs to @eclipsed-jester [link to masterpost]
CONTENT WARNINGS: Lots of grief, Mentioned/past character death (and themes of death in general), Blood/Injury/violence, discussion of child abuse, some existentialism
Explore each world below the cut!
Sonic Terrasphere:
Sonic TerraSphere is a multimedia AU that depicts the different Sonic canons as one shared universe. The story follows Sonic, Shadow, and Silver as they go on a world-hopping adventure with their friends to stop the Black Arms from invading Mobius.
The Hates Shadow Club:
The Hates Shadow Club (or THSC for short) is an AU that follows Mephiles, Eclipse, and Infinite after joining forces to try to take revenge on Shadow, only for the three of them to grow attached to each other and finding a strange love for a much more domestic life in Spiral Hill. It's a lot more focused on Found Family and the healing that comes from companionship, even with the most unlikely of people. It's mainly just an au to enjoy exploring characters and the healing journey they go through.
Wowee! We are so excited to be able to participate in this! Regardless if we move on, the TerraSphere team is happy to have fun and introduce our project to a larger audience!
Heads up, TerraSphere fans! We got a new schedule for the remainder of 2026!
Our team is always working tirelessly to bring you the next episode. But sometimes, life gets in the way regardless, which is why Episode 9 is being delayed to August of this year. Episodes 10 and 11 are also re-scheduled for release in 2026 October and December, respectively.
But not to worry! We still have plenty of content coming up on our official Tumblr blog, as well as answers to any questions brought up via our ask box!
Thank you for your patience, and we can't wait to show you what comes next for this story!
Would you look at that? A brand new episode of Sonic TerraSphere is now available on YouTube! Join Sonic, Shadow, Silver, Amy, and Tails as they embark on the next arc in the mystical country of Avalon!
why does Jules have those scars on his legs and chest?
Jules has prominent scars from heart and knee surgery that he undertook to help improve his quality of life as a result of his chronic illness. While it's a non-existent illness much like NIDS, the symptoms are incredibly similar to cvEDS, or Cardio-vascular Ehlers-Danlos Syndrome.
wait why does it say sonic was born in 1989?? wouldn't he be like almost 40???
If it was 2025, yes— but Sonic TerraSphere takes place in the year 2005! Specifically, 2005 A.D. So Sonic is indeed 16 by this time. Trust us, we did the math!
And before you ask, A.D. is not short for "Anno Domini" in this context. It actually stands for "After Death", in reference to when the Ancient Walkers gave their lives to protect Mobius a millennia ago. The era before this is referred to as "B.S." or "Before Sacrifice".
A devastating event from more than 65 years ago, the Robian War was a global conflict between several countries and the short-lived Kintobor Supremacy.
BACKGROUND
It all began with Julian Kintobor. A brilliant man, and well respected in the scientific community. Currently, civilization's biggest obstacle in terms of technological advancement was replacements for exhausted manual labor. Julian solved this by inventing the SWATbot, or "Self-producing Wireless Automaton-based Task Robot". This was met with worldwide acclaim, and was an instant success— the only downside was the cost to making them.
During this, several scientists were experimenting with ways to preserve the strength of the elderly or the chronically sick. Using data recovered from lost technology of the First Great Civilization, they crafted a machine capable of recording and reforming cullular data. The Roboticizer was the result of this, able to convert organic tissue into a nano-bot like material. Unfortunately, the procedure was also discovered to be irreversible. After the showcase, it was quickly decided by the world leaders that this technology be heavily restricted and eventually outlawed.
Julian, however, saw an opportunity. With the SWATbot Project becoming more costly as time went on— not to mention their constant need for repairs, he suggested that they instead utilize the Roboticizer on prison inmates to replace the SWATbots as a workforce. This was, of course, met with much criticism.
Not satisifed with that answer, Julian stole the Roboticizer and proceeded with the experiment anyway. Turning several unwilling participants into near-mindless cyborgs, he presented the attempt to the Acorn Republic. Horrified, they ordered him to be incarcerated.
Julian had planned for this, and had also transformed his left arm into a special weapon that could directly control those who were fully roboticized. Now literally armed with a vengeance, he proceeded to command those he turned to take over the Acorn Republic's capital with brute force, and then imprisoned and roboticized any who fought back.
THE WAR
Julian declared war on the world and established the Kintobor Supremacy. He unleashed his "Robian Army" on the masses, as well as reprogramming the remaining SWATbots to turn on their operators. Overland declared war on Kintobor, with the Wolf Pack Nation following suite. The Kingdom of Acorn also provided military support not long after.
This war lasted for ten years, with thousands of innocent civilians being roboticized. The remainder of the Acorn Republic and Overland finally settled their differences for the sake of a common enemy, yet both political bodies were dismantled by enemy forces in the process. The Wolf Pack Nation also suffered heavy losses, in both civilians and environmental damage as a result of Kintobor's attacks.
(The Space Colony ARK Project was greenlit as a failsafe for the worst possible outcome, although it would not be completed until a year after the war's conclusion.)
Finally, the mad warlord was then successfully assassinated by the Original Freedom Fighters, who gave their lives in the process, and the war came to an end.
Despite the efforts of many, those that were roboticized were forever lost, as many did not survive past procedures to revert the effects.
The remaining citizens of the Wolf Pack Nation, Acorn Republic, and Overland then banded together to form the United Federation, a political body meant to ensure such an ordeal would never happen again. G.U.N. was also founded during this time.
A one-way ticket to a nightmare! Mephiles the Dark has been planning in secret for years, and it seems now he's setting the stage for vengeance like no other.
For more in-depth information, click the “Keep reading” button below (and expect updates as the series goes on)!
~HISTORY~
Once known as the Flame of Hope, the King Duke of Soleanna's sacrilegious experiments (performed in an effort to control time) gave rise to a devastation unlike any other. Mephiles was born of this pain, a cunning intellect split from the more emotional half of Iblis.
Mephiles' first experience as a singular entity was being trapped within the Scepter of Darkness, an ancient artifact used to contain powerful evils. An equally powerful gemstone was used to seal him properly, and the newborn god spent the next ten years plotting his revenge.
Now that he is free, Mephiles has exited stage left, but it won't be forever...
Episode Seven of Sonic TerraSphere is officially here! Watch it on YouTube NOW!
The Sun Citrine has been found within the Aquatic Base of Soleanna! It seems only the combined power of Sonic, Shadow, and Silver can safely retrieve it. Will they succeed... and be able to face what's revealed?
Please note this project is NOT MADE FOR KIDS. It contains violence, some horror elements, and swearing. Watch responsibly.
Didn't you guys have a website? What happened to it?
We indeed had a website hosted on Blogger! However, due to the lack of traffic, we ended up moving to Tumblr!
By that point, a lot had changed in how we wanted to present TerraSphere. Therefore, most of the content featured on the website is no longer considered canon to the project unless otherwise stated.
When referencing lore for TerraSphere, be sure to use this blog (and of course the officially released episodes)!
For any who are curious, the website is still up, but currently inactive.
Are there different breeds of Mobian hedgehogs like in real life? Or are they all referred to as just "hedgehogs"?
Fantastic question! Yes, there are multiple "breeds" of hedgehog Mobians that exist! And in case you're wondering which types our main cast of hedgies are, here's a quick run-down!
Firstly, Sonic and Amy are both European Hedgehogs! Although they're referred to as "Eurish Hedgehogs" in-universe.
Meanwhile, Silver and Shadow are Northern White-Breasted Hedgehogs, characterized by their fluffy white chest fur!
You wouldn't guess this mild-mannered science whiz is secretly an adrenaline junkie! Although maybe Helen's hobbies are more obvious than they seem...
For more in-depth information, click the “Keep reading” button below (and expect updates as the series goes on)!
~HISTORY~
Helen was born a happy and healthy baby, but she began displaying signs of NIDS at a young age. This eventually culminated in a series of medical episodes that threatened her livelihood each time. But thanks to modern-day advances in medicine, doctors managed to isolate the effects and properly treat Helen before any life-threatening issues arose.
The damage to her nervous system was extensive, however, and when Helen turned eleven, she began utilizing a wheelchair as a mobility aid.
Her treatment wasn't cheap, and her loving father Doug often worked day and night to pay for her medical expenses. Because of this, Helen grew up not wanting others to be responsible for her needs, and eventually got into STEM. She, alongside her childhood best friend Chris Thorndyke, founded Thorndyke Industries in an effort to make the world a little easier to manage— for everyone's sake!
