- Speed the Hedgehog (NightHedgehog14's version)
- Speeder The Hedgehog
- Speedo the Hedgehog/Cat
- Speedup
- Speedy Rescuers 2
- Speedy The Hedgehog
- Speedy the Gecko
- Speedy the hedgehog
- Spellbound
- Spetonik the Ultra-bot
- Spettrale the Quokka
- Sphene the Hedgehog
- Spice the Hedgehog
- Spice the fox
- Spike the Bulldog
- Spike the Cyber-weasel
- Spike the Porcupine
- Spike the Wisp
- Spike the porquipine
- Spikes the Hedgehog
- SpinBall Dimension
- Spin Attack
- Spin Crush
- Spin Glide
- Spin Punch
- Spin shred
- Spindash
- Spirit Ball
- Spirit Blink
- Spirit Grip
- Spirit emeralds
- Spirit the Cat
- Spirit the cat
- Spirita
- Spirits Ultimate
- Splash, the Goddess of Water
- Splash the Greninja
- Splat N. Bunny
- Splatter the Zebra/Featured Article Interview
- Splice The Hedgehog
- Splice The Hedgehog/Attacks and Skills
- Splice The Hedgehog/Interview
- Splice The Hedgehog (RPG Fangame)
- Splice The Hedgehog (RPG Fangame)/To Do List
- Split the Hedgehog
- Sporcizia the Fox
- Spring Launch Kick
- Spring the Cat
- Spring the Chameleon
- Springwood city
- Sprite the Hedgehog
- Spyken's Unfinished Business
- Squall the Hedgehog
- Squash, the Goddess of Stone
- Squeaky Mouse
- Stacie the Hedgehog
- Stacy the Parakeet
- Staff of Darkness
- Stages of Evolution
- Stalemate the Echidna
- Stan the Wolf
- Star's Stave
- Star(Myst)The Hedgehog
- StarShine Kingdom
- Star & Luna
- Star Sonic Riders
- Star Technologies
- Star The Hedgehog
- Star Wars: Fanfiction Story
- Star the Hedgehog
- Star the Hybrid
- Starboard
- Starbolt-type Light Tank
- Starburst the Cat
- Stardust's Escape
- Stardust Seether the Hedgehog
- Stardust Tonic
- Stardust the Cat
- Stargala
- Starikalo
- Stark the Hedgehog
- Starkmann Isle
- Starlight The Hedgehog
- Starose
- Starrie Night
- Starsi the Hedgehog
- Starsword
- Static Nega
- Static the Cat
- Static the Hedgehog (Elementian)
- Station Square
- Station Square/Dimitri Chronicles
- Station Square/Mobius Redrawn
- Station Square (After Sonic Adventure)
- Station Square Halloween Horror Nights! (Free Join)
- Station Square Halloween Horror Nights! (Free Join)/Part1
- Station Square Hotel
- Station Square Police Department
- Statyx the Hedgehog
- Statyx the Hedgehog/Attacks
- Statyx the Hedgehog/History
- Statyx the Hedgehog/Powers & Abilities
- Statyx the Hedgehog/Upgrades
- Stave of Existence
- Stave of Time
- Steady Firebreathing
- Stealth the Bat
- Stealthbot
- Stealthy The Skunk
- Steam Blimp
- Steam Gun
- Steam Punk
- Steampunk Falls
- Steel-type Battle Armor
- Steel Hammer
- Steel Horse APC
- Stella the Fox
- Stephan Stalvan
- Stephani Bell
- Stephanie (Candy freak)
- Stephanie the Ocelot
- Stephen the Eagle
- Stephen the Echidna
- Stern the Wolverine
- Steve the Hedgegod
- Steven
- Stevie Campbell
- Stewart the Flying Squirrel
- Stewart the Hedgehog
- Stewart the Stoat
- Stiletto the Hedgehog
- Stilt Sub-House
- Stilton the Skeleton
- Stocking the Hedgehog
- Stone Edge
- Stoneback Armor
- Stoneview City
- Stonia, the Goddess of Earth
- Stop Faking A Scene!
- Storm, the Goddess of Wind
- Storm (Element)
- Storm (Sonic Piece)
- Storm Shelter Village
- Storm The Hedgehog
- Storm the Albatross (IncaIceBunny's Universe)
- Storm the Buizel
- Storm the Fox
- Storm the HedgeHog
- Storm the fox
- Stormcenter
- Stormcloud Island
- Stormpulse-type Medium Tank
- Stormwind "Kane" Maurice the Hedgehog
- Story:'The Virus.'
- Story:A Blue Light For the Dark
- Story of the Elementals
- Strange Dream, New World/Chapter 1
- Strange Mango
- Strato
- Stratos (Element)
- Streak
- Streak/Moveset
- Streak/Quotes
- Streak the Bird
- Streak the Hawk
- Stream The Icecat
- Street Fighter X Sonic The Hedgehog
- Strength Contest
- Strider the Eaglehog
- Strife the Hedgehog
- Strike the Cyan Lazer Wisp
- Strike the Werewolf
- Striker the Echidna
- Striker the Hedgehog
- Striker the Hedgehog (Jezz of Time)
- Striker the King Cobra
- Striker the Mink
- Striker the Wolf
- Striker the hedgehog
- Strings the Mech Spider
- Stripe the Wolf
- Stromkreis the Great Dane
- Strong the Hedgehog
- Stuart the Hedgehog
- Stuff by zp100
- Stun the Chao
- Stygian Spear
- Style Into Dreams WARPED!!!
- Suarra the Cat
- Submission
- Subzero Glacier Egg Base
- Sucellos
- Sue the Hedgehog
- Sugar the Artificial Lifeform
- Sugar the Cat
- Suki Pukket
- Sulama the Dunnart
- Sulten the Civet
- Sumac the Skyhog
- Summers the Hedgehog
- Sun Gun
- Sunken Palace
- Sunni the Hedgehog
- Sunny
- Sunny Dayz
- Sunny the Hedgehog
- Sunny the Hedgehog/CelestialSun's Fan-Characters
- Sunny the Lycanroc
- Sunnyville
- Sunshine the Bernard
- Sunshine the hedgehog
- Suolo the Hedgidna
- Super Ashura
- Super Changin' Muscle Rangers
- Super Crysis
- Super Hyper Dudes
- Super Kenan
- Super Marsha
- Super Nova
- Super Photon
- Super Sid
- Super Smash Bros. Dash!
- Super Sonic
- Super Sonic/Combined Universes
- Super Sonic (Sonic the Comic)
- Super Sonic 64 ds
- Super Sonic Advance
- Super Sonic Brawlers
- Super Sonic EX: The Sprite Crossover Movie.
- Super Sonic Megamix Z
- Super Sonic Smackdown
- Super Sora the Hedgehog
- Super Statyx
- Super Turbo
- Super verse
- Superdeaththehegehog
- Suprano
- Surematu the Hedgehog
- Surg the Hedgefox
- Surge the Hedgehog (XxZekeKnightxX)
- Surge the hedgehog
- Suri the Echidna
- Surreal Circus Zone
- Surtr the Jotunn
- Survival Zone (Roleplay)
- Susano Yuki
- Sutamin the Jomon
- Suzannia The Cheetah
- Suzumei Batchi the Espeon
- Suzuna Shiroyuki the Kitsune
- Suzuna Tenshi the Kitsune
- Suzuna Tenshi the Kitsune/Escape from Aperture
- Suzuna the Kitsune: Next Generation
- Suzuna the Kitsune: Next Generation - Chapter 1
- Suzuna the Kitsune: Next Generation - Prologue
- Swarna the Fox
- Sweet Scent the Stunky
- Sweet Temptation
- Swift the Armadillo
- Swift the Generic Hedgehog
- Swift the Hedgehog
- Swift the Silvally
- Swiftrunner
- Switches
- Swoop the Hedgehog
- Sword of Legends
- Sword of Light
- Swords Dance
- Sybe the Robo-Tech
- Sybil the Panther
- Sydney The Cybernetic Cat
- Sydney the Echidna
- Sydney the Hedgehog
- Syeed the Hedgehog
- Syfe the Cyber-bot
- Sylaeus the Thorny Devil
- Sylest the Hedgehog
- Sylph
- Sylph/Caretaking
- Sylph/Subspecies
- Sylvan Island
- Sylvan Shower
- Sylvia Prower
- Sylvia the Dark Ranger
- Sylvia the Hedgecat
- Sync the Robochidna
- Synchro Combo
- Synchro Stones
- Synchro the Hedgehog
- Syndra, the Goddess of Lava
- Synergy Effect
- Synkka the Serval
- Syraco The Raptor
- Syrii
- T.I.T.A.N.
- T.Y.R.A.N.N.U.S.
- TCS Battle Format
- TDG: Dark Eden
- TD (Adventures of the Tails Doll)
- TFFS:A Rumble Down Under
- TFFS:A Rumble Down Under/Chapter 1
- TFFS:Artikan Assault
- TFFS:Artikan Assault/Chapter 1
- TFFS:Artikan Assault/Chapter 2
- TTCable
- TV4 Hydra Assault Vehicle
- T the CyberWolverine
- Tab The Cat
- Tabitha the Chameleon
- Tackle
- Taenger the Cherouv
- Taffy Monroe the Bunny
- Taglumo the Hedgehog
- Tai
- Tai the Charizard
- Tail's Nightmare (Story Mode)
- Tail Smash
- Tail Whip
- Tails' Adventure II
- Tails' Mansion
- Tails' New Friend
- Tails' Sky Fight
- Tails: Galactic Mission
- Tails: Galactic Mission/Script
- Tails: Galactic Mission/Staff
- Tails & Shadow: Night Heroes
- Tails (Re: Sonic GX)
- Tails (Vulpinroid)
- Tails (Vulpinroid: Memento Mori)
- Tails Adventure: Return Of The Battle Bird Armada
- Tails Adventure: Return Of The Battle Kukku Empire
- Tails Adventure: Return Of The Battle Kukku Empire/Script
- Tails Adventures
- Tails Doll (OCA)
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