Stay Sonic - Sonic the Hedgehog Guidebook (UK, 1993) SEGA

Stay Sonic is a guidebook that was released in the UK in 1993. It details Sonic's origins (including the whole Robotnik/Kintobor thing), tells why Sonic is blue, contains hints and tips for Sonic the Hedgehog 2, and a bunch of other goofy 90's stuff. The backstory contained in it was later used as the basis for a series of Sonic novels released in the UK.

The page scans came from Sonic Retro. I just compiled them into a CBZ file for easy reading and distribution.