Sonic the Hedgehog

Sonic the Hedgehog is a character from the eponymous fandom.

Character
Sonic is the main protagonist in his series. He is mainly known for his speed, as he is capable of running faster than the speed of sound.

Het

 * Sonade — the ship between Sonic and Shade the Echidna
 * Sonpaz — the ship between Sonic and Topaz
 * Sonaisy — the ship between Sonic and Princess Daisy
 * Sonalina — the ship between Sonic and Rosalina
 * Sonally — the ship between Sonic and Sally Acorn
 * Sonamy — the ship between Sonic and Amy Rose
 * Sonangle — the ship between Sonic and Tangle the Lemur
 * Sonave — the ship between Sonic and Wave the Swallow
 * Sonaze — the ship between Sonic and Blaze the Cat
 * Sonbunnie — the ship between Sonic and Bunnie Rabbot
 * SonDash — the ship between Sonic and Rainbow Dash
 * Sondonna — the ship between Sonic and Madonna
 * Soneach — the ship between Sonic and Princess Peach
 * Sondy — the ship between Sonic and Wendy O. Koopa
 * Soneam — the ship between Sonic and Cream the Rabbit
 * Soneena — the ship between Sonic and Zeena
 * Soneezie — the ship between Sonic and Breezie the Hedgehog
 * Sonelise — the ship between Sonic and Princess Elise
 * Sonerci — the ship between Sonic and Perci
 * Soniara — the ship between Sonic and Tiara Boobowski
 * Sonicks — the ship between Sonic and Sticks the Badger
 * Sonicole — the ship between Sonic and Nicole the Holo-Lynx
 * Sonikal — the ship between Sonic and Tikal
 * Sonilac — the ship between Sonic and Sash Lilac
 * Sonilla — the ship between Sonic and Vanilla the Rabbit
 * Soniona — the ship between Sonic and Fiona Fox
 * Sonisper — the ship between Sonic and Whisper the Wolf
 * SonMaria — the ship between Sonic and Maria Robotnik
 * SonMerna — the ship between Sonic and Merna the Merhog
 * SonMiku — the ship between Sonic and Hatsune Miku
 * SonMina — the ship between Sonic and Mina Mongoose
 * Sonmo — the ship between Sonic and Cosmo
 * Sonouge — the ship between Sonic and Rouge the Bat
 * Sonrine — the ship between Sonic and Marine the Raccoon
 * Sonshy — the ship between Sonic and Fluttershy
 * Sontena — the ship between Sonic and Palutena
 * SonTwi — the ship between Sonic and Twilight Sparkle
 * Sonulie — the ship between Sonic and Julie-Su

Slash

 * Foxic — the ship between Sonic and Foxy the Pirate
 * Marionic — the ship between Sonic and Mario
 * MegaSonic — the ship between Sonic and Mega Man
 * Mephonic — the ship between Sonic and Mephiles the Dark
 * Sonadow — the ship between Sonic and Shadow the Hedgehog
 * Sonake — the ship between Sonic and Solid Snake
 * SonChris — the ship between Sonic and Christopher Thorndyke
 * Sonector — the ship Sonic and Vector the Crocodile
 * Soneggman — the ship between Sonic and Doctor Eggman
 * Sonespio — the ship between Sonic and Espio the Chameleon
 * Soninfinite — the ship between Sonic and Infinite
 * Sonighty — the ship between Sonic and Mighty the Armadillo
 * Sonilver — the ship between Sonic and Silver the Hedgehog
 * Sonjet — the ship between Sonic and Jet the Hawk
 * Sonoa — the ship between Sonic and Klonoa
 * Sonourge — the ship between Sonic and Scourge the Hedgehog
 * Sontails — the ship between Sonic and Miles "Tails" Prower
 * Sontoine — the ship between Sonic and Antoine D'Coolette
 * Sonuckles — the ship between Sonic and Knuckles the Echidna
 * Sonuigi — the ship between Sonic and Luigi

Non-binary

 * Metonic — the ship between Sonic and Metal Sonic
 * PikaSonic — the ship between Sonic and Pikachu
 * Shardonic — the ship between Sonic and Shard the Metal Sonic
 * SoNiGHTS — the ship between Sonic and NiGHTS
 * Sonyborg — the ship between Sonic and Cyborg Sonic

Poly

 * Sconadilver — the ship between Sonic, Scourge, Shadow, and Silver
 * Shadonyborg — the ship between Sonic, Shadow, and Cyborg Sonic
 * Sonadaze — the ship between Sonic, Shadow, and Blaze
 * Sonadilver — the ship between Sonic, Shadow, and Silver
 * Sonadouge — the ship between Sonic, Shadow, and Rouge
 * Sonalleam — the ship between Sonic, Sally, and Cream
 * Sonamream — the ship between Sonic, Amy, and Cream
 * Soneaisy — the ship between Sonic, Peach, and Daisy
 * SonSalAmy — the ship between Sonic, Sally, and Amy
 * SonShadAmy — the ship between Sonic, Shadow, and Amy
 * SonShadSilvAmy — the ship between Sonic, Shadow, Silver, and Amy
 * Sonuxouge — the ship between Sonic, Knuckles, and Rouge

Family

 * Sonic Underground — the between Sonic, Sonia the Hedgehog, and Manic the Hedgehog

Friend

 * SonChip — the friendship between Sonic and Chip
 * Team SegaSonic — the friendship between Sonic, Mighty, and Ray
 * Team Sonic — the friendship between Sonic, Tails, and Knuckles

Cargo

 * SonChili — the ship between Sonic and a chili dog

Canon
Sally Acorn

Breezie the Hedgehog

Amy Rose

Fiona Fox

Mina Mongoose

Princess Elise III

Fanon
As Sega's mascot and one of the key reasons for the company's success during the 16-bit era of video game consoles, Sonic is one of the most famous video game characters in the world. Also Sonic has been acknowledged as, undoubtedly, the most recognizable and famous character in the Sonic the Hedgehog franchise according to an official popularity poll.

In terms of shipping, as the main character of the series Sonic is the most shipped character in the Sonic fandom, and it's pretty popular to see him paired with Amy, Sally, Blaze, Shadow, or even with crossover characters.

Fandom
FAN FICTION
 * Sonic (Games) tag on FanFiction.Net
 * Sonic the Werehog (Games) tag on FanFiction.Net
 * Sonic (Sonic Boom) tag on FanFiction.Net
 * Sonic (Sonic Underground) tag on FanFiction.Net
 * Sonic (Mario) tag on FanFiction.Net
 * Sonic (Super Smash Bros) tag on FanFiction.Net
 * Sonic (Super Smash Bros) tag on FanFiction.Net

WIKIS
 * on the
 * Sonic the Hedgehog on Sonic Retro