Was the Chocobi (チョコビ) snack from Shin Chan fictional or did it exist before Shin Chan? If you watched the Shin Chan anime series you will know what I'm talking about. (I don't know if Chocobi appears in the manga, too.) Was Chocobi an existing snack that just appeared in the Shin Chan series? Or was it invented with the series and later produced as a real snack for merchandise?
According to various Japanese sources (Japanese Wikipedia, NicoNicoPedia, pixiv dic, Geocities JP), the Chocobi snack was originally came from Crayon Shin-chan.

However, according to the interview with Mitsuru Hongo (Director of Crayon Shin-chan's anime), it was based from Lotte's Koala's March.



... until 1993, when Lotte did a collaboration with Crayon Shin-chan to produce a peanuts chocolate flavored snack with 2 types: Chocobi, and Royal Chocobi (with almond). However, they're pretty much different from the one in anime. Couldn't find any images of them.

Later on, Orion also produced Chocobi snack with star-shaped, but the package was totally different.



Bandai also produced Chocobi snack, but instead of star-shaped, it's a biscuit stick. The package was also totally different.



Moving forward to 2006, Tohato released a real Chocobi snack.



Lastly, since 2014, Morinaga did a collaboration with the movie to produce Chocobi Ice.