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

144654 - safe, artist:nuinu_17, knuckles the echidna (sonic), echidna, mammal, monotreme, anthro, sega, sonic the hedgehog (series), 2022, food, fruit, grapes, male, solo, solo male - Furbooru

#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

19989 - Related Images - Furbooru

100227 - Related Images - Furbooru

100227 - Related Images - Furbooru

19989 - Related Images - Furbooru

788 - Related Images

263154 - safe, artist:toonidae, knuckles the echidna (sonic), echidna, mammal, monotreme, anthro, sega, sonic the hedgehog (series), 2023, 2d, frowning, looking at you, male, simple background, solo, solo male, unamused, white background - Furbooru

3828 - Related Images

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

15885 - safe, artist:fire-for-battle, knuckles the echidna, shadow the hedgehog, 2020, blushing, duo, eyes closed, gay, holding each other, kiss, knuxadow, shipping, simple background, sitting, white background - art .mobius.social

Sonic Classic Heroes, Page 98

19976 - 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

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