modgen super sonic Palette - Pixilart

metal sonic p3 - Comic Studio

Sonic the hedgehog: Blue trouble – The adventures of Jesse and Sonic

Modgen Sonic ATS sprite Remaker by MekanTheGuy on DeviantArt

Custom / Edited - Sonic the Hedgehog Customs - Sonic - The Spriters Resource

The VG Resource - Style Evaluation (Formerly: Non-Sonic Sprites)

Modgen Sonic Sonic 1 Decomp MODS

User blog:The Shadow Of Darkness/Sonic ComiX: The Reboot (A.K.A The Return), Sonic Wiki Zone

PACK DE SPRITES HD SONIC CLASSIC (MODGEN) V1

Adanishedgehog on Game Jolt: sprite sheet of yours's truly made entirely by me

Modgen Sonic Sprites Sheet Remastered by SonicFanSheet on DeviantArt