Apart from the ThunderCats Comic Books, there were a number of ThunderCats Story books that were published. Some of these books retold the stories from the ThunderCats (original series) cartoons while others narrated completely new adventures. Some storybooks were packaged with accompanying audio tapes which narrated the story.
In France, where the ThunderCats are known as "CosmoCats", an exclusive encyclopedia was released in 2004 which was offered to a few people that purchased the DVD’s. Limited and distributed only to the French market, this encyclopedia displayed toy information, character sketches, model sheets, character specific biography sheets, pencil sketches and much more.