
The poster for the movie Here Comes Sophie… or is it?
Here Comes Sophie takes a community by surprise
The kind of people who spend their time looking for lost media are a peculiar bunch (myself included). Part detective, part librarian, avid lost media hunters usually spend their time hunting through forums, chasing leads, all while experiencing a feeling akin to having something perpetually on the tip of your tongue.
There is another danger to potentially ensnare media connoisseurs looking to find the next Cracks. And that's the lost media that never existed in the first places.
The issue is a common one for the community. On Lost Media Wiki, "existence unconfirmed" and "non-existence confirmed" are common statuses for a variety of rumored or lost media. This begs a few strange questions though: Who would spread the rumor of a movie/ad/piece of music only to claim that copies don't exist? The kind of person who would play a practical joke? As a hoax?

An ad for the alleged movie.
Most audiences can be forgiven for not being aware of Sophie, a Belgian comic book character that saw some light popularity in the 1960s. She was actually kind of pioneering as the first female character to lead a comic strip series in Spirou, a weekly comics magazine that has been publishing since the late 1930s. The French-language comic didn't become as big with English audiences as Tintin (and definitely didn't become as big as The Smurfs, which first appeared in Spirou in 1958 and eventually became a massive global franchise), but they were certainly beloved by a generation of French speaking children.
So it's not entirely surprising that someone would have made a movie about Sophie. Those actually familiar with the character might be surprised as she was originally a side character in a comic series starring her friend, Starter, which itself started as an occasional column focusing on automobiles. (I have no idea how that worked.) In any case, the supposed existence of a movie no one had a copy of was enough to get the sleuths at LMW salivating.
People quickly pointed out that the people listed on the poster didn't have the film listed in their filmographies. It was sort of assumed the movie was made but never released, either due to quality or lack of interest. For a while, there was even a proper Wikipedia page identifying the movie as a piece of lost media. Eventually though, people began to grow skeptical.

It was soon pointed out that various posters claimed two different movie studios behind the work. (Not impossible.) And that at least one of the posters was pulled directly from the back of one of the series anthologies. (Lazy but not implausible.)

Ultimately, it all added up to a lot of skepticism and the conclusion that it was fan art. It's difficult or impossible to know who actually made and uploaded the original posters. Various searches have not yielded any results and the few that are available are often in French. Anyone that can ID the origin point of these posters might find a fascinating story. But after some time looking, It's probably best to move on. After all, it's no Ed, Edd n Eddy: Junkyard Scramble.
To their credit, the community at LMW seemed to take the situation with a grain of salt. Just another mystery to solve in the pursuit of humanity's lost creations.