A
A.D.A.M.
Maximillian Acorn
Princess Sally Acorn
Amy Rose
Anti-Freedom Fighters
Athair
B
Brotherhood of Guardians
C
Captain Plunder
Chao (Sonic the Hedgehog)
Chaotix
Charmy Bee
Coconuts (Sonic the Hedgehog)
Commander Brutus
D
Dark Legion
Destructix
Dingoes (Sonic the Hedgehog)
Drakon Empire
E
Doctor Eggman
Elias Acorn
Enerjak
F
Fiona Fox
Freedom Fighters (Sonic the Comic)
Freedom Fighters (Sonic the Hedgehog)
G
Guardian Units of Nations
I
Iblis (Sonic the Hedgehog)
Ifrit (Sonic the Hedgehog)
J
Jet the Hawk
Julie-Su
K
Knuckles the Echidna
Knuckles the Echidna (Archie character)
L
Lara-Su
Lien-Da
Lumina Flowlight
M
Mammoth Mogul
Manic the Hedgehog
Marine the Raccoon
Merlina (Sonic the Hedgehog)
Metal Knuckles
Metal Sonic
Metarex
Mighty the Armadillo
Miles "Tails" Prower (Archie character)
Mina Mongoose
Minor Freedom Fighters
Minor characters in Sonic the Hedgehog (comic book)
Minor villains in Sonic the Hedgehog (comic book)
N
NICOLE
Nack the Weasel
Ixis Naugus
Nazo (Sonic the Hedgehog)
P
Pir'Oth Ix
Princess Elise
P cont.
Professor Pickle
Miles "Tails" Prower
R
Ray the Flying Squirrel
Alternate versions of Doctor Eggman
Dr. Robotnik (Sonic the Comic)
Rouge the Bat
S
Scourge the Hedgehog
Scratch and Grounder
Shade the Echidna
Shadow the Hedgehog
Shahra
Shortfuse the Cybernik
Silver the Hedgehog
Snively Kintobor
Solaris (Sonic the Hedgehog)
Sonia the Hedgehog
Sonic the Hedgehog (Archie character)
Sonic the Hedgehog (Sonic the Comic)
Sonic the Hedgehog (character)
Storm the Albatross
T
Tails Doll
Tikal the Echidna
U
Uma Arachnis
V
Vector the Crocodile
W
Wave the Swallow
Wendy Witchcart
Ha, just in time- DAMN IT! (While writing "Just in time", clock went to 10:36).
EDIT:
I can not comprehend this horrible butchering of the english language.