Second Falling Sprite Sheet (Featuring Knuckles, Shadow & Updated Sonic) : r/SonicTheHedgehog

Sonic the Hedgehog 2 (2013) - The Cutting Room Floor

Sonic,Tails, Knuckles vs Shadow DC2 Sprite animation

New Update] Falling Sprites For All 2.04

Sonic 2: Return of Shadow - Custom Sprites Sheet by AsuharaMoon on DeviantArt

Sonic the Hedgehog Drawing and Painting Set for Boys - Sonic Gift Bundle with Coloring Book, Coloring Utensils, Watercolor Paints, Stickers, and More

Which character do you think deserves their own game? : r/SonicTheHedgehog

Friday Night Funkin' Sonic's Rhythm Rush, Funkipedia Mods Wiki

Sonic and Co

Sonic Prime (Western Animation) - TV Tropes

Sonic The Hedgehog School Supplies Value Pack for Kids - 13 Pc Bundle with Sonic Folders, Notebook, and Stickers for Boys and Girls

Launch Site (Sonic 3 & Knuckles) - Skymods

Second Falling Sprite Sheet (Featuring Knuckles, Shadow & Updated Sonic) : r /SonicTheHedgehog

Sonic The Hedgehog - A Little Ball of Energy in an Extremely Handsome Package

Skill trees by @djtrouple on Twitter : r/SonicTheHedgehog

Rough and Tumble-r