Sonic Chaos Tails Sprites (Sonic 2 Palette) by NickyTeam2 on DeviantArt

MC Sonic the Hedgehog (1.2) by Aureumber on DeviantArt

Custom / Edited - Sonic the Hedgehog Customs - Sonic (Mania, Sonic 1-Style) - The Spriters Resource

PC / Computer - Sonic Mania - Game Icon - The Spriters Resource

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

PC / Computer - Sonic Mania - Big Squeeze - The Spriters Resource

PC / Computer - Sonic Mania - Heavy Gunner - The Spriters Resource

PC / Computer - Sonic Mania - Blue Spheres - The Spriters Resource

Sonic Chaos Sonic Sprites (Sonic 2 Palette) by NickyTeam2 on DeviantArt

The VG Resource - Dolphman's submissions

Genesis / 32X / SCD - Sonic the Hedgehog - Objects (Common) - The Spriters Resource