Greg Sonic Fanart - Fan Art & Comics - Sonic Stadium

Promo art for Sega's Mega Man: The Wily Wars (years before Sonic and Mega Man teamed up in the comic series) : r/SonicTheHedgehog

Greg martin sonic the hedgehog by SpongeDayron on DeviantArt

Greg Tails Fanart - Fan Art & Comics - Sonic Stadium

Greg Martin, Sonic Wiki Zone

Sonic the Hedgehog box art illustrator Greg Martin passes away

Greg Peters Cartoons and Caricatures

Greg Martin Sonic Fan Art : r/SonicTheHedgehog

Greg Martin Sonic fanart! by PinkFlamingo101 on DeviantArt

l - Playground

That mysterious Greg Martin artwork

Fan Art & Comics - Sonic Stadium

Fan Art & Comics - Sonic Stadium

Generations - Fan Art & Comics - Sonic Stadium

Throwback (Greg Martin Sonic Generations) by on_hiatus on Sketchers United

Greg Sonic Fanart - Fan Art & Comics - Sonic Stadium