19978 - safe, artist:bongwater777, knuckles the echidna (sonic), shadow the hedgehog (sonic), echidna, hedgehog, mammal, monotreme, anthro, sega, sonic the hedgehog (series), 2020, black fur, black tail, blushing, chaos emerald, cheek fluff

#56199 - safe, artist:itshelias94, knuckles the echidna (sonic), echidna, mammal, monotreme, anthro, plantigrade anthro, sega, sonic boom (series), sonic the hedgehog (series), 2020, 5 fingers, clothes, male, quills, red tail, shoes, simple background

Sonic Classic Heroes, Page 98

788 - Related Images

67351 - safe, artist:roadkillmars, knuckles the echidna (sonic), rouge the bat (sonic), bat, echidna, mammal, monotreme, anthro, sega, sonic the hedgehog (series), anthro/anthro, beanie, blushing, bottomwear, breasts, choker, cleavage, clothes, dress, duo

#149774 - safe, artist:lemon_eyebrows, knuckles the echidna (sonic), shadow the hedgehog (sonic), sonic the hedgehog (sonic), anthro, sega, sonic the hedgehog (series), 2022, male, males only, trio, trio male - Furbooru

259575 - safe, artist:claudeartz, knuckles the echidna (sonic), anthro, sega, sonic prime, sonic the hedgehog (series), knuckles the dread (sonic prime), male, solo, solo male - Furbooru

144205 - source needed, useless source url, safe, artist:nibroc-rock, shade the echidna (sonic), echidna, mammal, monotreme, anthro, sega, sonic the hedgehog (series), 3d, digital art, female, solo, solo female - Furbooru

232944 - safe, artist:waterdesukedo, knuckles the echidna (sonic), echidna, mammal, monotreme, anthro, sega, sonic the hedgehog (series), blushing, clothes, ears, gloves, male, purple eyes, red body, simple background, solo, solo male, white

288314 - safe, artist:flashpointgear, tikal the echidna (sonic), echidna, fictional species, mammal, monotreme, robot, anthro, sega, sonic the hedgehog (series), 2023, black sclera, breasts, colored sclera, eyelashes, featureless breasts, female

3828 - Related Images

788 - Related Images

183998 - safe, artist:_karl0_, knuckles the echidna (sonic), echidna, mammal, monotreme, sega, sonic the hedgehog (series), hyper knuckles - Furbooru