Crossovers

• Adventure Universe
• Adventures of Sonic Underground
• 
  Albus the Cat
• 
  Amatiel Sacraforge
• Angelica the Bandicoot
• 
  Angry Birds Sonic
• Anime Downtown
• 
  Asterix

• Barnaby the Cat

• 
  Calvin the Cat
• 
  Capcom vs. Sonic the Hedgehog
• Carly X
• Cartoon Central
• 
  Chain of Colors (Sora and Sonic's new journey)
• 
  Chao World
• 
  User:Chembur/Count of Monta Crista
• 
  User:Chembur/Daroach the Mouse
• 
  Conner the Squirrel
• 
  Cyrax the fighters
• 
  Cyrus Prower

• Dallas and Dakota Trilogy
• 
  Dr. Eggman's Touhou Adventure Battle
• 
  Dynomite

• 
  Earth Defense Force
• Erica and Co. All-Star Racing
• Erica Sakura (Anime Series)
• Erica Sakura (Video Game)
• 
  Erica Sakura's Game World

• Fanon of Hurricane
• Felix the Jerboa
• Flare the Wolf
• Fleeing Evil Saga

• 
  Game World
• Gunner

• 
  H*R Crossover Project
• Heart of Freedom, Soul of Duty
• Heracles Anchorta
• 
  Hero of Mobius
• Hope for the Heroes

• Roleplay:In Space Sonic cant Run...
• 
  Infiltration: A Sonic Crossover Story

• Jezz of Time (fanfiction)

• 
  User:Kelothan/Sonic Revolution X
• Kimmy Amber Wellspring
• 
  User blog:KingJoe69/Mini Chronicles 1
• 
  Knuckles' Chaotix: Robotnik Strikes Back

• Leon S. Kangaroo
• Leyvaten the Dragon
• Liger Zero
• Liger Zero/Fire Phoenix
• Liger Zero/Jet Falcon
• 
  Linebeck the Ferret
• Lost in Space
• 
  Lynx

• 
  Mariko Masuyo
• 
  Mario & Sonic Generations
• 
  Mario & Sonic Generations!
• Mario V Sonic: Clash of Heroes
• Marsha & Gunner
• Melinda Heritson
• 
  Mia MaJikku
• 
  Micah the Cat

• Other Land 2

• Penelope the Raccoon
• 
  Platinum Zilla
• Category:Pokemon
• 
  Prez the Mockingjay

• Ralph the Lion
• 
  Rayman (Crossover Character)
• Rise of the Vampires
• Rock the Hedgehog
• 
  User:Ryushusupercat/Charlotte the Cat
• 
  User:Ryushusupercat/Edward the Wolf
• 
  User:Ryushusupercat/Irolustre the Ratynx
• 
  User:Ryushusupercat/Jolene the Fox
• 
  User:Ryushusupercat/Shazza the Dingo
• 
  User:Ryushusupercat/Sly the Thylacine
• 
  User:Ryushusupercat/Soma Cruz the Hedgehog
• 
  User:Ryushusupercat/Vira Lemaire

• 
  SANTIAGO CORTEZ
• 
  Sega All Star Battle
• 
  SEGA vs. Capcom: Fighters of the Millennium
• Shadow the Hedgehog 2: The Forking Road
• 
  Shanoa the Fox
• Silver's Journey
• 
  Sonic & Johnny Test (TV Show)
• 
  Sonic & Rainbow Dash: Defenders of the Core
• 
  Sonic & SEGA All-Stars Racing: Super Charged!
• 
  Sonic & Spongebob Riders
• Category:Sonic & Spongebob Series
• 
  Sonic & the 6 Piraka (Game)
• Sonic Adventure AF (Series Info) (Please Join)
• 
  Sonic Allstars EX: Dimensional Shift
• Sonic and Finn: Mathmatical to the Core
• Sonic and Friends: Gravity Falls Mystery
• Sonic and the Head Vampire
• 
  Sonic Collisions: The Wrath of Mecha Sonic
• 
  Roleplay:Sonic Crossover Heroes By Apallo The Hedgehog
• 
  Topic:Sonic GT
• Sonic Hearts: Dissidia
• Sonic in My Little Pony: Equestria Girls
• Sonic orange: crazy cortex
• Sonic Racing X-treme!
• Sonic Riders: Off the Ground
• Sonic SatAM Remake
• 
  Sonic Team Gaming Force
• 
  Sonic the Fighter
• Sonic the Hedgehog and Doctor Who Crossover
• 
  Sonic the Hedgehog Awaking of the Dead
• 
  Sonic the Hedgehog vs. Johnny Test 3: New Dimensions
• 
  Sonic the Hedgehog vs. Johnny Test 4: Galactic Threats
• Category:Sonic the Hedgehog vs. Johnny Test series
• 
  Sonic the hedgehog Vs. Johnny Test: Triple Trouble Mayhem (Private RP)
• Sonic Underground Remake
• 
  Sonic Unite! - The incredible Six
• 
  Sonic Unite!: Across the 4th Dimension
• 
  Sonic vs. Bayonetta: The Witch's Curse
• Sonic X Dragon Ball
• Sonic X Remake
• 
  Sonic X: Friendship is Magic
• Sonic Z
• Sonic's Chilidogeria
• Sonic's Ice Creameria!
• 
  Sonic's Trip to Isle Delfino
• Sonic's Tuba Band
• 
  Sonic/Tekken Tournament
• 
  Sonic: Equestrian Adventure
• 
  Sonic: Toontown Trials
• SSB: X Zone
• 
  Stocking the Hedgehog
• Storm's Struggle
• Street Fighter X Sonic The Hedgehog
• Super Sonic EX: The Sprite Crossover Movie.
• Super Sonic Megamix Z

• 
  The Best Tracks of SEGA Games
• The EQuartz Committee/Video Game
• The Legend of Fox the Brave
• The Shadow Wars
• The Sonic and Megaman Game Series
• 
  The Sonic the Hedgehog Game
• Category:The Sonic the Hedgehog Game
• The Villain's Reveal
• The War of Time (story)
• Roleplay:The Were Plague
• 
  Time Spinner
• Toon City
• Toon Star Studios
• Toxin the Spider
• Tryndamere Yarostev
• Twitch the Rat
• 
  Ty the Thylacine

• 
  Varusa D'Era
• 
  Vivian Daraku

• Winx Club/Sonic X (Season 2)

• Zero the Wolf