The Map Of Mobius
The Map Of MobiusSource: Sonic Super Special #2
Penciler: Unknown

This piece was printed in SSS#2 after the deafeat of Robotnik #1 for the "Mobius World Tour" storyline. This map covers specific places and locations of imporatace in the Archie continuity. Notice the similarity to an Earth map. >;)
  

Sonic #14
Sonic #14Source: Sonic The Hedgehog #67
Penciler: Dave Manak

One of the unused Sonic covers for Sonic #14, a lighthouse gag with a pun on their spiral staircases, this was not seen in print until Sonic 67 as a pro art page.
  
Sonic #20
Sonic #20Source: Sonic The Hedgehog #20
Penciler: Dave Manak

Sonic at an artists desk. Printed in Sonic 20, this was probably also an unused cover illustration with a colored Manak design to frame it. It's the first pro art piece produced in the comic for Archie that I have access to bookwise ^^.
  

Clash Of The Titans
Clash Of The TitansSource: Super Sonic Vs. Hyper Knuckles
Penciler: Art Mawhinney

A double page pinup piece featuring fan favorites Super Sonic and Hyper Knuckles going at it! ^^
  

Robotnik Rules!
Robotnik Rules!Source: Sonic And Knuckles Mecha Madness
Penciler: Art Mawhinney

A beautiful piece (probably painted watercolor or thick color pencil) of Doctor Robotnik in a typical pose^^.
  
Sonic VS Silver Sonic!
Sonic VS Silver Sonic!Source: Sonic Quest #3
Penciler: Manny Galán

A full splash page of Sonic shorting out the giant robotic Silver Sonic: Model 1.
  

The Death Egg
The Death EggSource: Sonic Quest #1
Penciler: Manny Galán

A double splash page of what was one of the most requesting Game devices in the comics - The Death Egg! Shown complete and against a sky backgdrop its a pretty piece of artwork. :)
  

Sonic VS The Classic Badniks!
Sonic VS The Classic Badniks! Source: Sonic The Hedgehog #40
Penciler: Dave Manak

Printed as a pinup piece in Sonic #40, this piece shows Sonic in a reunion fight against the classic badnik that showed up in the book: Motobug, Crabmeat, Batbot, Buzzbomber, Burrobot, and Caterkiller.
  
Sonic #49
Sonic #49Source: Sonic The Hedgehog #49
Penciler: Nelson Ribeiro

One of the few fully colored pro pieces: Sonic, having defeated a horde of robots, stands on top of the conquered smoldering pile holding the remains of a Swatbot.
  

The Big Kiss!
The Big Kiss!Source: Sonic Super Special #6
Penciler: Art Mawhinney

I think this pic pretty much speaks for itself. :D Archie went through hell with Sega to get this AND the remainder of Endgame printed for the 50th Anniversary issue of Sonic The Hedgehog, later fully completed in SSS#6.
  
Whoops, Apocalypse!
Whoops, Apocalypse!Source: Sonic The Hedgehog #51
Penciler: Sam Maxwell

Whoops, Apocalypse! (I dunno why, but I love that line). ^^ Some of Sam Maxwell's earliest works, this full page splash shows Sonic entering Knothole Village from the Great Oak Slide to find ALL the FF's fully roboticised courtesy Doc R with Cluck perched on his shoulder!
  

Sonic #59
Sonic #59Source: Sonic The Hedgehog #59
Penciler: Patrick Spaziante

One of the unused Sonic covers for Sonic #59, a battle between Cyber Sonic and Cyber Tails for supremacy in the Unknown Zone! The second cover was redone adding Al and Cal and showing the duo in a different pose. ^__^ It's also one of the only pieces of main Pro Art done by Spaz.
  
Sonic #60
Sonic #60Source: Sonic The Hedgehog #60
Penciler: Jim Valentino

Super Sonic! ^^ A pro art piece done by Jim Valentino, creator of Image Comics, for the Sonic books. This was one of his first pieces of art for Archie Sonic, since then he's done guest artwork for the books.
  

Sonic #61
Sonic #61Source: Sonic The Hedgehog #61
Penciler: Harvey Mercadoocasio

Sonic posing with Tails, Sally, and Knuckles in the descending background.
  
Sonic #62
Sonic #62 Cover B/WSource: Sonic The Hedgehog #62
Penciler: Steven Butler

A preview of the artwork of Steven Butler, this pro art piece features Sonic and the SatAM Freedom Fighters - Sonic, Tails, Antione, Bunnie, and Dulcy The Dragon, running off to their next mission in the Great Forest! ^^ A pretty cool pic.
  

Sonic Smash!
Sonic Smash!Source: Sonic The Hedgehog #63
Penciler: Steven Butler

A full page spread of Sonic smashing through the statue of himself at Sand Blast City!
  
Sonic #63
Sonic #63Source: Sonic The Hedgehog #63
Penciler: Nelson Ribeiro

A sorta odd looking piece featuring Doc Robotnik against a robotic background by Nelson Ribeiro.