A few weeks ago, Spirou Reporter reposted an image that Kid Toussaint had put up on Facebook, a film noir-ish drawing by Chris Evenhuis for an aborted Spirou project they worked on together. Toussaint followed up that post with a series of images from another Spirou project, this time with more of a superhero flavor:
(The reference to the “professor” being 75 suggests that this may have been intended for the Spirou 75th anniversary issue in 2013.) In addition to this sample page, drawn by David Lafuente (Ultimate Spider-Man), the images include studies of many Spirou characters, drawn by several different artists (apparently mostly from the Marvel stable)…
And finally, a splash page by Paul Renaud:
Re-imagining Spirou as a masked hero flying around with a souped-up jetpack, ‘Spirou Comics’ could be considered a precursor to Yoann & Vehlmann’s Supergroom.