|Sonic the Hedgehog Book|
|Publication date: 1992|
|Author: Keji Terada|
|Illustrator: Sango Norimoto|
Sonic the Hedgehog Book is a Japanese-only publication, released to tie in with the upcoming release of Sonic the Hedgehog 2. Featuring comic strips done by Keji Terada and Sango Norimoto, the same team responsible for the Sonic the Hedgehog manga that appeared in Shogaku Yonensei, it is unknown if these strips were collections from previous material or if they were new specifically for the book.
The centerpiece of the book surrounds a fanciful retelling of Sonic's origin, done in prehistoric times. In this, Dr. Eggman is a caveman who has the ability to transform living things into stone, and with this power is able to terrorize the other inhabitants that live nearby. Eventually, Nicky is persuaded to try and stop him, and when things look their bleakest he is able to transform into Sonic the Hedgehog, and stop Eggman, both turning him into stone and winning the heart of Amy.
The final story in the collection places the cast of the Sonic manga in medieval times, where Nicky once again must turn into Sonic to stop Eggman and his magic. Coincidentally, this theme would be revisited in the Wii game Sonic and the Black Knight, although Eggman is not featured in that game.