Multiple Sonic Mania by DevyOfficial on DeviantArt

Mighty and Tiara custom Sonic sprites

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

The Spriters Resource - Full Sheet View - Sonic Pocket Adventure - Sonic

PC / Computer - Sonic Mania - Ray the Flying Squirrel - The Spriters Resource

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

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

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

PC / Computer - Sonic Mania - Fang, Bean, & Bark - The Spriters Resource

Sonic Mania Sprites - Colaboratory

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