Bigthecat Stories

When an explosive battle with Dr. Eggman shatters the universe, Sonic and Gwen races through parallel dimensions to reconnect with their friends and save the world.

The monsters are real. They roam this land. They terrorize the citizens. No one knows where they came from or how to stop them. That's what (Y/n) is for. She's immune t...

When an explosive battle with Dr. Eggman shatters the universe, Sonic races through parallel dimensions to reconnect with his friends and sister and save the world. Thi...

; - You let yourself be isolated in a lone, dense galaxy. And by galaxies, you mean being stuck in a void. The only friends you have are billions of crystals, but the...

Evil!Sonic Prime AU They thought he was their friend. They thought he was helping them make their homes a better place, as he made a huge difference in all of their shat...

Following his discovery of an ancient source of unlimited power on the mysterious South Island, Doctor Ivo Robotnik is welcomed with open arms into the Illuminati - a sh...

(A.K.A What if Shadow was the one to break the Paradox Prism) What happens when one blue hedgehog tried to break the most powerful gem in existence and one black hedgeho...

[A rebooted version of the anime, Sonic X. Obviously Enough.] On an unnamed world, Sonic the Hedgehog, Miles "Tails" Prower, and Amy Rose attempt to rescue Cre...

➜ 𝙔𝙤𝙪 𝙠𝙣𝙤𝙬 𝙮𝙤𝙪'𝙧𝙚 𝙞𝙣 𝙡𝙤𝙫𝙚 𝙬𝙝𝙚𝙣 𝙮𝙤𝙪 𝙘𝙖𝙣'𝙩 𝙛𝙖𝙡𝙡 𝙖𝙨𝙡𝙚𝙚𝙥 𝙗𝙚𝙘𝙖𝙪𝙨𝙚 𝙧𝙚𝙖𝙡𝙞𝙩𝙮 𝙞𝙨 𝙛𝙞𝙣𝙖𝙡𝙡𝙮 𝙗𝙚𝙩𝙩𝙚𝙧 𝙩𝙝𝙖𝙣 𝙮𝙤�...

The story follows Sonic the Hedgehog, Miles "Tails" Prower, Knuckles the Echidna, Amy Rose, newcomers Big the Cat and E-102 Gamma (along with Ash and co.), in...

Y/N is Tails older brother. He have been taking care of his bro even since. And when they meet Sonic, Y/N and Tails became best friend with him. They gone to a lot of ad...

Sooooo... don't judge. I was inspired by someone to write this so I really hope you do enjoy this. It's literally the Frozen plot with some OBVIOUS changes throughout th...

The Chaos Emeralds have gone missing, their last known location are at 3 islands called, "The Starfall Islands," home to an ancient civilization that died off...

this is AU were shadow was in the black armys and he is is the next leader and as a little brother eclipse and his father black doom then one day the black armys captur...

Ships are allowed

Y/N is a Robotic helper for Tails. Tails Create Y/N as a assistant and a friend. Overtime Tails start to develop a crush on her. However when the shards shatter. Y/N and...

Have you ever wondered what it would be like if Cosmo had never actually died? What if Metal Sonic had appeared? What if Silver, Blaze, Omega, and other characters were...

Amy has finally admitted that she has feelings for Sonic. After that fangirl stage, she and Sonic agreed to move on from that time and forget about it. They've become gr...

So this fanfic is based of a comic I seen by XammyOowah on twitter (they're comic where shadow and sonic go to a sonadow universe) and it's also based off sonic prime so...

Join Peach the Rabbit helping Sonic the hedgehog and her Friends when they end up in world called Earth and try stop Dr.Eggman from taking over it And Finding Chaos emer...