The guy with the image of Alizee with butterfly wings tattooed on his back went by the name Roman. He was from California. I met up with him and RMJ in Paris when the concert at the Rex was cancelled. Roman seemed to drift away after that. RMJ was probably one of the most hard core fans, at least in terms of how many times he was able to see her.
I went to a few Les Enfoires shows that RMJ also attended. The advantage of having those shows in the winter was many people had large bags with them to carry their winter clothing which they'd shed once they got inside. This allowed RMJ to conceal a rather large camera with which he'd get some great photos' during the shows. In fact, I think Wikipedia used one of his photos' on their Alizée page.
RMJ was around for several more years. He had his own web page that is still out there but it looks like the last post was in 2017. (
https://www.alizeeart.com/). He was active on FB too for a while but I doubt if he still is.