Ricky (リッキー) is one of the Animal Friends imprisoned by Dr. Eggman for use as 'organic batteries' for his badnik army. Ricky species' is a squirrel and he was the inspiration for the character Sally Acorn featured in Sonic the Comic, Sonic the Hedgehog (TV series) and Sonic the Hedgehog (Archie comics).
|Sonic the Hedgehog (16-bit)||Marble Zone|
|Sonic the Hedgehog (8-bit)||Jungle Zone|
|Sonic the Hedgehog 2 (16-bit)||Emerald Hill Zone|
|Sonic the Hedgehog 2 (8-bit)||Green Hills Zone|
|Sonic CD||Palmtree Panic, Quartz Quadrant|
|Sonic & Knuckles||Mushroom Hill Zone, Flying Battery Zone, Death Egg Zone|
|Sonic Pocket Adventure||Neo South Island Zone, Secret Plant Zone, Cosmic Casino Zone, Aquatic Relix Zone, Sky Chase Zone (Pocket Adventure), Aerobase Zone, Gigantic Angel Zone|