Mirage Supersonic.. he had so much momentum 10 years ago - initially from the QL vocals that fans loved dearly, then popularity of his generique and rhumbas like Mon bébé and Love Roger.
Failing to properly promote the album, he didn't gain traction as a artist. Last I heard he was in a enrolled in a musical academy and occasionally he has concerts in Liege.
These guys (Fally, Ferre, Mirage) were quite fortunate to the session backing of great QL alumni and access to great studios for their solo debuts.