Sonic Underground 90s AU [P] by: Crimsonroselee Non Anime: Sonic Series Fan FictionGenre(s): Comedy | Type: Alternate UniverseLatest Revision: October 08, 2025 14:30 PDT | Chapters: 8 | Words: 16.4K | Visits: 119Summary: Disclaimer: all characters belong to Sega, Dic, and IDW except one OC. A collection of short stories where the triplets enjoy their childhood in the 90s.
An Unusual Alliance [A] by: Crimsonroselee : Sonic Series Fan FictionGenre(s): Drama | Type: Alternate UniverseLatest Revision: October 01, 2025 09:36 PDT | Chapters: 3 | Words: 4.3K | Visits: 27Summary: Disclaimer: all characters belong to Sega, Dic, and IDW. The Sonic Underground find themselves stranded on an island that few Mobians know anything about and find potential allies, but it comes with a strange price.
Psycho in my head [T] by: Crimsonroselee : Sonic Series Fan FictionGenre(s): Cyberpunk / Drama / Sci-fi | Type: Alternate UniverseLatest Revision: September 30, 2025 09:46 PDT | Chapters: 7 | Words: 8.0K | Visits: 55Summary: Disclaimer: all characters belong to Sega, Dic, and IDW. Surge and Kit are “rescued” from a lab explosion by Dr. Eggman and are given life saving cyborganics, but there’s a catch.
The Trend [P] by: Crimsonroselee : Sonic Series Fan FictionGenre(s): Comedy | Type: One ShotLatest Revision: September 30, 2025 07:26 PDT | Chapters: 2 | Words: 1.4K | Visits: 38Summary: Disclaimer: all characters belong to Sega, Dic, and IDW. Manic and Surge try to use Kit for an internet trend and Sonic sees it as an opportunity to break them up.
Happy Birthday [P] by: Crimsonroselee : Sonic Series Fan FictionGenre(s): Classic | Type: One ShotLatest Revision: September 17, 2025 07:07 PDT | Chapters: 1 | Words: 1.3K | Visits: 26Summary: Disclaimer: all characters belong to Sega, Dic, and IDW. Sonic, Sonia, and Manic celebrate their seventeenth birthday and learn some interesting facts about the day of their births.
Grief [P] by: Crimsonroselee : Sonic Series Fan FictionGenre(s): Drama | Type: Alternate UniverseLatest Revision: September 15, 2025 09:38 PDT | Chapters: 3 | Words: 3.5K | Visits: 123Summary: Disclaimer: all characters belong to Sega, Dic, and IDW. Manic deals with the death of a loved one
The Shadow Identity [P] by: Crimsonroselee : Sonic Series Fan FictionGenre(s): Action / Drama | Type: Alternate UniverseLatest Revision: September 15, 2025 09:36 PDT | Chapters: 5 | Words: 4.9K | Visits: 241Summary: Disclaimer: all characters belong to Sega, Dic,and IDW. Shadow wakes up one morning with no memory of who he is or how he wound up in a stranger’s home and why he’s being hunted by assassins.
Sonic’s Sick [P] by: Crimsonroselee : Sonic Series Fan FictionGenre(s): Comedy | Type: OtherLatest Revision: September 15, 2025 09:35 PDT | Chapters: 1 | Words: 1.3K | Visits: 85Summary: Disclaimer: all characters belong to Sega, Dic, and IDW. Sonic gets a really bad cold and his siblings have to care for him. Also, he annoys Shadow
Manic’s new girlfriend [A] by: Crimsonroselee : Sonic Series Fan FictionGenre(s): Drama | Type: Alternate UniverseLatest Revision: September 02, 2025 09:52 PDT | Chapters: 4 | Words: 6.0K | Visits: 168Summary: Disclaimer: all characters belong to Sega, Dic, and IDW. Manic dates Sonic’s sworn enemy, to Sonic’s dismay
New Sonic Underground [T] by: Crimsonroselee : Sonic Series Fan FictionGenre(s): Drama | Type: Alternate UniverseLatest Revision: August 27, 2025 09:18 PDT | Chapters: 14 | Words: 22.4K | Visits: 932Summary: Disclaimer: all characters belong to Sega, Dic, and IDW. A coup forces the royal hedgehog family to separate. The royal triplets finally reunite years later to take down Robotnik once and for all.
Lab Rats [T] by: Crimsonroselee : Sonic Series Fan FictionGenre(s): Drama | Type: Alternate UniverseLatest Revision: August 18, 2025 13:07 PDT | Chapters: 10 | Words: 9.2K | Visits: 561Summary: Disclaimer: all characters belong to Sega, Dic, and IDW. Manic, Shadow, and Surge are captured by GUN, forced to endure the organization’s experiments until the day they decided they’ve had enough.
Lost and Found [P] by: Crimsonroselee : Sonic Series Fan FictionGenre(s): Drama | Type: Alternate UniverseLatest Revision: August 14, 2025 13:22 PDT | Chapters: 5 | Words: 5.9K | Visits: 444Summary: Disclaimer: all characters belong to Sega, Dic, and IDW. Aleena faces every parent’s worst nightmare: her baby has been kidnapped. Now, she and her remaining two children deal with the aftermath of the kidnapping and trying to hold on to hope for read more
Friends with the Enemy [P] by: Crimsonroselee : Sonic Series Fan FictionGenre(s): Drama | Type: Alternate UniverseLatest Revision: August 11, 2025 11:40 PDT | Chapters: 9 | Words: 8.0K | Visits: 677Summary: Disclaimer: all characters belong to Sega, Dic, and IDW. An explosion and resulting chemical spill gave two little hedgehogs super powers. An evil scientist wants to use their power to rule the world and thinks he has the perfect plan to spy read more
Second Chance 2 [P] by: Crimsonroselee : Sonic Series Fan FictionGenre(s): Drama | Type: Fanfiction SequelLatest Revision: July 30, 2025 10:05 PDT | Chapters: 2 | Words: 1.2K | Visits: 106Summary: Disclaimer: all characters belong to Sega and Dic. Meeting Manic and Sonic (from an alternate universe) inspires Sonia to track down her missing mother.
Success or Sorrow [P] by: Crimsonroselee : Sonic Series Fan FictionGenre(s): Drama / Sci-fi | Type: Fanfiction SequelLatest Revision: July 28, 2025 10:06 PDT | Chapters: 6 | Words: 5.3K | Visits: 453Summary: Disclaimer: all characters belong to Sega and Dic. Sequel to Three Part Disharmony. Sonic and his siblings have finally found their mom, but a new problem arises that could spell disaster for the resistance.