Metal Sonic Rebooted - Metal Sonic sprite sheet by LoraTWolf46 on DeviantArt

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

PC / Computer - Sonic Mania - Creator Credits & Try Again Screens - The Spriters Resource

PC / Computer - Sonic Mania - Dr. Robotnik / Eggman - The Spriters Resource

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

PC / Computer - Sonic Mania - Knuckles the Echidna - The Models Resource

Sonic Mania springs sprites HD by Sairot247 on DeviantArt

The VG Resource - Dolphman's submissions