- & Knuckles
- **********
- 1-Up
- 4Kids Entertainment
- 6-Pak
- ??? (Shadow)
- AGES
- A Ghost's Pumpkin Soup
- A New Day
- A New Venture
- Aaron LaPlante
- Aaron Webber
- Abby
- Abraham Acorn
- Acceleration Up Lv 2
- Acoustic Blaster
- Action Gauge
- Action Stage
- Adabat
- Adventure Field
- Adventures (desambiguación)
- Adventures of Sonic the Hedgehog
- Aerial
- Aero-Cannon
- Aero-Chaser
- Aero Egg
- Aerobase Zone
- Agente Stone
- AiAi
- Aida
- Air Boost (Sonic Boost)
- Air Boost (Sonic Rivals)
- Air Chaos Burst
- Air Chaos Magic
- Air Chu2 Bomb
- Air Energy Ball
- Air Fleet
- Air Glide
- Air Saucer
- Akatento
- Akhlut
- Akht.
- Akon
- Alan Quail
- Albert Butler
- Albion
- Albion Attack
- Albion High Council
- Aldea Spiral Hill
- Aleah Baker
- Alex Kidd
- Alex Makhlouf
- Alexander Acorn
- Alexandre Gillet
- Alexis
- Alexis Acorn
- Alf Layla wa-Layla
- Ali Baba
- Alicia Acorn
- All Hail Shadow
- Almost Dead
- Alpha 100 Series
- Altar Emerald
- Altitude Limit
- Alyla Browne
- Amadeus Prower
- Amaya Forch
- Amazing Arena
- Amenbo
- Amigo
- Amoeba Droid
- Amy's American Page One
- Amy-Zilla
- Amy: El mundo al Revés
- Amy Birnbaum
- Amy Dash
- Amy Palant
- Amy Rose
- Amy Rose/Galería
- Amy Rose/Habilidades y Poderes
- Amy Rose/Historia
- Amy Rose (Archie)
- Amy Rose (Clásica)
- Amy Rose (IDW)
- Amy Rose (Pre-Super Genesis Wave)
- Amy Rose (Pre-Super Genesis Wave)/Galería
- Amy Rose (Shogakukan)
- Amy Rose (Sonic Boom)
- Amy Rose (Sonic X)
- Amy Rose (Sonic X)/Galería
- Amy Rose (Sonic the Comic)
- Amy Rose (desambiguación)
- Ana
- Ana Vidal
- Anarchy Beryl
- Anastasia
- Ancianos
- Ancient (compañía)
- Ancient Ruins
- Andrea Navas
- Android
- Andronic
- Andy Pandatelly
- Angel-La
- Angel Island
- Angel Island (IDW)
- Angel Island (Mundo de Classic Sonic)
- Angel Island (Pre-Super Genesis Wave)
- Angel Island (Sonic X)
- Angel Island (desambiguación)
- Angel Island Zone (Sonic Advance)
- Angel Island Zone (Sonic Mania)
- Angel Island Zone (Sonic the Hedgehog 3)
- Angel • Devil
- Angels with Burning Hearts
- Animales
- Anissa Bellone
- Anke Kortemeier
- Anna Gamburg
- Anti-Jules Hedgehog
- Anti-Knuckles
- Anti-Overlanders
- Anti Rob O' the Hedge
- Antlion (Sonic Lost World)
- Antlion (Sonic the Hedgehog CD)
- Antlion (desambiguación)
- Antlion Mecha
- Antoine D'Coolette (Pre-Super Genesis Wave)
- Anton
- Anton Veruca
- Antonio
- Aoi Yūki
- Apotos
- Apple
- Aqua Lake Zone
- Aqua Planet Zone
- Aqua Road
- Aqua Shield
- Aquarium Park
- Aquatic Base
- Aquatic Mine
- Aquatic Relix Zone
- Aquatic Ruin Zone
- Aquis
- Ara
- Arachne
- Arcade Collection
- Archie Comics
- Archie Knuckles the Echidna Issue 1
- Archie Mega Man Issue 24
- Archie Mega Man Issue 25
- Archie Mega Man Issue 26
- Archie Mega Man Issue 27
- Archie Mega Man Issue 50
- Archie Mega Man Issue 51
- Archie Mega Man Issue 52
- Archie Mega Man Worlds Unite Battles
- Archie Sonic Boom Issue 02
- Archie Sonic Boom Issue 03
- Archie Sonic Boom Issue 04
- Archie Sonic Boom Issue 05
- Archie Sonic Boom Issue 06
- Archie Sonic Boom Issue 07
- Archie Sonic Boom Issue 08
- Archie Sonic Boom Issue 09
- Archie Sonic Boom Issue 1
- Archie Sonic Boom Issue 10
- Archie Sonic Boom Issue 11
- Archie Sonic Super Digest 5
- Archie Sonic Super Special Magazine Issue 10
- Archie Sonic X Issue 01
- Archie Sonic X Issue 02
- Archie Sonic X Issue 03
- Archie Sonic X Issue 04
- Archie Sonic X Issue 05
- Archie Sonic X Issue 06
- Archie Sonic X Issue 07
- Archie Sonic X Issue 08
- Archie Sonic X Issue 09
- Archie Sonic X Issue 10
- Archie Sonic X Issue 11
- Archie Sonic X Issue 12
- Archie Sonic X Issue 13
- Archie Sonic X Issue 14
- Archie Sonic X Issue 15
- Archie Sonic X Issue 16
- Archie Sonic X Issue 17
- Archie Sonic the Hedgehog Free Comic Book Day 2013
- Archie Sonic the Hedgehog Free Comic Book Day 2014
- Archie Sonic the Hedgehog Free Comic Book Day 2015
- Archie Sonic the Hedgehog Free Comic Book Day 2016
- Archie Sonic the Hedgehog Halloween Comic Fest 2013
- Archie Sonic the Hedgehog Issue 1
- Archie Sonic the Hedgehog Issue 160
- Archie Sonic the Hedgehog Issue 161
- Archie Sonic the Hedgehog Issue 162
- Archie Sonic the Hedgehog Issue 163
- Archie Sonic the Hedgehog Issue 164
- Archie Sonic the Hedgehog Issue 165
- Archie Sonic the Hedgehog Issue 166
- Archie Sonic the Hedgehog Issue 167
- Archie Sonic the Hedgehog Issue 168
- Archie Sonic the Hedgehog Issue 169
- Archie Sonic the Hedgehog Issue 170
- Archie Sonic the Hedgehog Issue 171
- Archie Sonic the Hedgehog Issue 2
- Archie Sonic the Hedgehog Issue 230
- Archie Sonic the Hedgehog Issue 231
- Archie Sonic the Hedgehog Issue 232
- Archie Sonic the Hedgehog Issue 233
- Archie Sonic the Hedgehog Issue 242
- Archie Sonic the Hedgehog Issue 248
- Archie Sonic the Hedgehog Issue 249
- Archie Sonic the Hedgehog Issue 250
- Archie Sonic the Hedgehog Issue 251
- Archie Sonic the Hedgehog Issue 252
- Archie Sonic the Hedgehog Issue 253
- Archie Sonic the Hedgehog Issue 254
- Archie Sonic the Hedgehog Issue 255
- Archie Sonic the Hedgehog Issue 256
- Archie Sonic the Hedgehog Issue 257
- Archie Sonic the Hedgehog Issue 258
- Archie Sonic the Hedgehog Issue 259
- Archie Sonic the Hedgehog Issue 260
- Archie Sonic the Hedgehog Issue 261
- Archie Sonic the Hedgehog Issue 262
- Archie Sonic the Hedgehog Issue 263
- Archie Sonic the Hedgehog Issue 264
- Archie Sonic the Hedgehog Issue 265
- Archie Sonic the Hedgehog Issue 266
- Archie Sonic the Hedgehog Issue 267
- Archie Sonic the Hedgehog Issue 268
- Archie Sonic the Hedgehog Issue 269
- Archie Sonic the Hedgehog Issue 270
- Archie Sonic the Hedgehog Issue 271
- Archie Sonic the Hedgehog Issue 272
- Archie Sonic the Hedgehog Issue 273
- Archie Sonic the Hedgehog Issue 274
- Archie Sonic the Hedgehog Issue 275
- Archie Sonic the Hedgehog Issue 276
- Archie Sonic the Hedgehog Issue 277
- Archie Sonic the Hedgehog Issue 278
- Archie Sonic the Hedgehog Issue 279
- Archie Sonic the Hedgehog Issue 280
- Archie Sonic the Hedgehog Issue 281
- Archie Sonic the Hedgehog Issue 282
- Archie Sonic the Hedgehog Issue 283
- Archie Sonic the Hedgehog Issue 284
- Archie Sonic the Hedgehog Issue 285
- Archie Sonic the Hedgehog Issue 286
- Archie Sonic the Hedgehog Issue 287
- Archie Sonic the Hedgehog Issue 288
- Archie Sonic the Hedgehog Issue 289
- Archie Sonic the Hedgehog Issue 290
- Archie Sonic the Hedgehog Issue 294
- Archie Sonic the Hedgehog Worlds Unite Battles
- Archimedes
- Archivos técnicos de Sonic the Hedgehog
- Arctic Freedom Fighters
- Ardor Rojo
- Argentium
- Argyle the Crocodile
- Ari
- Ari the Ram
- Arid Sands
- Armand D'Coolette
- Armas de Shadow the Hedgehog (juego)
- Arms
- Arondight
- Around the World in 80 Seconds
- Arrow Monitor
- Arsenal Pyramid
- Arthur (desambiguación)
- Artificial Chaos
- Asesor del presidente
- Ashe
- Ashleigh Ball
- Asistente del Professor Pickle
- Aspect Co. Ltd
- Asteroid Coaster
- Asteroid Wispon
- Asteroide Índigo
- Asteron
- Asteron (desambiguación)
- Ataque Meteorito
- Ataque Multicolor
- Athena
- Atomic Destroyer Zone
- Atravesando las Llamas
- Attack (power-up)
- Augustus the Polar Bear
- Aurora Icefield
- Auto
- Auto-Slider
- Auto Running
- Avatar
- Avatar (Archie)
- Avatar (IDW)
- Avatar (desambiguación)
- Avatar - F
- Avatar - M
- Azure Lake
- Azure Lake (desambiguación)
- Azure Lake Zone
- B. Chaos Emerald
- BFA
- Babylon Garden
- Babylon Guardian
- Babylon Rogues
- Babylon Rogues (desambiguación)
- Back 2 Back
- Back in Time
- Backbone Entertainment
- Badnik
- Badnik (Adventures of Sonic the Hedgehog)
- Badnik (IDW)
- Badnik (Película)
- Badnik (desambiguación)
- Badnik 1 de Amazing Arena
- Badnik 2 de Amazing Arena
- Badnik Tails
- Badnik de Isolated Island
- Balancín
- Balkiry
- Balkiry (desambiguación)
- Ball Hog
- Ball Shooter
- Balloon
- Balloon Panic
- Balloon Park Zone
- Bandanna Ghost y Bow Tie Ghost
- Bane Motora
- Barbara
- Barbo
- Barby Koala
- Bark the Polar Bear
- Bark the Polar Bear (desambiguación)
- Barrier Eggman
- Barrier stone
- Barril
- Bartleby
- Bashōsen
- Bass
- Bat Brain
- Bat Cracker
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