a redraw of the 90s Sonic Wired magazine cover with Greg Martin Sonic (made with illustrator) : r/SonicTheHedgehog

Discuss Everything About Sonic Wiki Zone

Greg Martin – A Tribute – MegaBites

The 100: GTKY ⋆ It Starts at Midnight

Sonic the Hedgehog box art illustrator Greg Martin passes away

Harris, Blake J. & Luckey, Palmer - The history of the future _

Drew Greg Martin Sonic in the SA1 pose! I think I really nailed the

Greg Martin, Sonic Wiki Zone

Drew Greg Martin Sonic again : r/SonicTheHedgehog

The Comics Reporter

Upscaled greg martin sonic artwork : r/SonicTheHedgehog

Sonic box artist Greg Martin passes away

Discuss Everything About Sonic Wiki Zone

a redraw of the 90s Sonic Wired magazine cover with Greg Martin

The Sonic Sketchbook: Images From the Late Greg Martin - Sonic Retro

Books: barriers to entry