STH2 Mighty the Armadillo by retrobunyip on DeviantArt

Custom / Edited - Sonic the Hedgehog Customs - Mighty (Sonic 2

Mighty the Armadillo, o amigo casca-grossa do Sonic - Nintendo Blast

Pixilart - Mighty the armadillo by Sonic-Gamer

Mighty the Armadillo Sprite Sheet 2.0 by farofeiroman on DeviantArt

Mighty the Armadillo (Original) Sprite Sheet by farofeiroman on DeviantArt

New hobby by rontufox on DeviantArt in 2023 Sonic fan characters, Sonic the hedgehog, Sonic & knuckles

Sonic Hacking Contest :: The SHC2023 Contest :: Character Edits + (Demo) :: By JunkeyBot

Sonic After The Sequel Mighty Sprite Sheet by RedactedAccount on DeviantArt

Comics with S1 (and S2)! Fang - Comic Studio

That's a) mighty (weird) sprite(!)