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

Mighty and Tiara custom Sonic sprites

Custom / Edited - Sonic the Hedgehog Customs - Sonic (Sonic Mania, T-Posed) - The Models Resource

Sonic & Knuckles Sprite Sheets – Sega Genesis - Sonic Galaxy.net

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

PC / Computer - Sonic Mania - Level Objects - The Spriters Resource

Custom / Edited - Sonic the Hedgehog Media Customs - Dr. Robotnik (Jim Carrey, Sonic Mania-Style) - The Spriters Resource

Modern Eggman CANCELLED [Sonic Mania] [Works In Progress]

Custom / Edited - Sonic the Hedgehog Customs - Egg Drill (Sonic Mania Adventures) - The Spriters Resource

Sonic in Undertale Spritesheet by Ninjacat025 on DeviantArt

PC / Computer - Sonic Chaos (Fan Game) - Sonic the Hedgehog - The Spriters Resource