Coconuts

Sonic The Hedgehog #'s 2 (First appearance), 4, 11, 16, 18, 25 (Cameo), 30, 57 (Flashback), 170 (Cameo), 185, 187, 188, 259 (Off-Panel), 267-268, 269 (Off-Panel), 271, 275 (Variant Cover)

Last updated: August 20, 2015

Breezie The Hedgehog

Sonic The Hedgehog #'s 267 (First appearance), 268-271, 275 (Variant cover)

Last updated: August 20, 2014

Phage

Sonic Universe #'s 71 (First appearance), 72-74

Last updated: April 17, 2015

Dr. Ellidy

Sonic Universe #'s 71 (First appearance), 72-74

Last updated: April 17, 2014

Sticks The Badger

Sonic Boom #'s 1 (First appearance), 2-11

Mega Man #'s 50-52 (Crossover)

Sonic Universe #'s 77-78

Sonic The Hedgehog #'s 274-275

Sonic: Worlds Unite Battles #1

Last updated: March 11, 2016

Dark Arms

Sonic Universe #'s 66 (First appearance), 67-70, 75 (Variant cover)

Last updated: May 28, 2015

Thunderbolt

Sonic The Hedgehog #263 (First appearance), 264-267, 269 (Cameo), 275 (Variant Cover)

Last updated: August 20, 2015

Cassia and Clove

Sonic The Hedgehog #263 (First appearance), 275 (Variant Cover), 277-279

Sonic Universe #73 (Variant cover)

Last updated: March 11, 2016

Moss The Sloth

Sonic The Hedgehog #263 (First Appearance), 264-267

Last updated: December 20, 2014

Dark Guardian

Sonic The Hedgehog #262 (First appearance), 263

Last updated: August 11, 2014

E-1000

Note: This is not the same character as E-102 Gamma.
Sonic Universe #2 (Cameo/First appearance)

Sonic The Hedgehog #262

Last updated: July 16, 2014

Scratch and Grounder

Sonic The Hedgehog #'s 2 (First appearance), 4, 11, 16, 57 (Flashback), 187-188, 259 (Off-Panel), 268-269, 270 (Variant cover), 271, 275 (Variant Cover)

Sonic Universe #15 (Grounder Cameo)

Sonic Super Special #15 (Grounder only)

Sonic: Worlds Unite Battles #1 (Grounder Cameo)

Last updated: August 20, 2015

Queen Angelica

Sonic The Hedgehog #261 (First appearance), 263, 270 (Cameo)

Last updated: March 15, 2015

King Puff

Sonic The Hedgehog #'s 261 (First appearance), 263, 270 (Cameo)

Last updated: March 15, 2015

Striker The Mantis Shrimp

Sonic The Hedgehog #'s 260 (First appearance), 261-263, 270 (Cameo)

Last updated: March 15, 2015

Pearly The Manta Ray

Sonic The Hedgehog #'s 260 (First appearance), 261-263, 270 (Cameo)

Last updated: March 15, 2015

Razor The Shark

Sonic The Hedgehog #'s 260 (First appearance), 261-263, 270

Last updated: March 15, 2015

Coral The Betta

Sonic The Hedgehog #'s 259 (Variant Ending/First Appearance), 260-263

Last updated: August 11, 2014

Chip

Sonic Universe #64 (First appearance), 65-66, 67 (Flashback), 70 (Off-Panel), 75 (Variant cover)

Sonic The Hedgehog #265 (Convention Variant Cover), 267 (Variant Cover), 268-269, 270 (Variant cover), 271-272, 276-279

Last updated: March 11, 2016

Dark Gaia Monsters

Sonic The Hedgehog #'s 260-263, 272, 275 (Variant cover), 278-279

Sonic Universe #'s 63 (First appearance), 64-66, 71, 73-74

Last updated: March 11, 2016

Fixit

Sonic Universe #63 (First appearance), 64-70, 75 (Variant cover)

Last updated: May 28, 2015

Relic The Pika

Sonic Universe #63 (First appearance), 64-70, 75 (Variant cover)

Last updated: May 28, 2015

Dillon Q. Cumber

(Picture stolen from Sonic News Network. Will replace once this guy makes an actual appearance in the comic.)

Sonic The Hedgehog #258 (Off-Panel)

Last updated: June 17, 2014

E-100 Series Robots

Note: This list excludes E-102 Gamma and E-123 Omega.

Sonic The Hedgehog #'s 79 (First appearance), 81-82, 258-259, 265-267

Last updated: December 20, 2014

Professor Pickle

Sonic The Hedgehog #'s 257 (Cameo/First appearance), 258-259

Last updated: June 17, 2014

Amanda Tower

Sonic The Hedgehog #257 (First appearance)

Mega Man #50 (Crossover/Cameo)

Last updated: June 17, 2015

Black Arms

Sonic The Hedgehog #'s 170 (First Appearance)

Sonic Universe #'s 59-62

Last updated: June 17, 2014

Maria Robotnik

Note: This character is dead. She only appears in the form of flashbacks or holograms. This page may be incomplete.

Sonic The Hedgehog #98 (First appearance), 124, 145, 158, 171, 

Sonic Universe #4, 60

Last updated: January 25, 2014

Professor Gerald Robotnik

Note: This character is dead. He only appears in the form of flashbacks or holograms. This page may be incomplete.

Sonic The Hedgehog #98 (First appearance), 124, 145, 157, 171

Sonic Universe #60

Last updated: January 25, 2014