PC / Computer - Sonic Mania - Special Stage Objects - The Spriters Resource

The Spriters Resource - Full Sheet View - Sonic the Hedgehog Customs - Sonic (Sonic 1 Beta-Style)

PC / Computer - Sonic Mania - Metal Sonic & Silver Sonic - The Spriters Resource

PC / Computer - Sonic Mania - Sonic the Hedgehog - The Spriters Resource

PC / Computer - Sonic Mania - Crimson Eye - The Spriters Resource

Custom / Edited - Sonic the Hedgehog Customs - Dr. Eggman (Chibi, Sonic Mania-Style) - The Spriters Resource

Sonic Mania Items Objects Misc Sprites by Alex13Art on DeviantArt

Sonic in Undertale Spritesheet by Ninjacat025 on DeviantArt

Sonic (S1SMS Overhauled) Sprites v2 by Aburtos on DeviantArt

Sonic mania Lilac Custome Sprite by RodriRikolino45 on DeviantArt

The VG Resource - Dolphman's submissions