I think so (the faces are too close to the iconic actors, such as Christopher Reeve, and there's no way they photographed an actor doing Yoda), but the artist is a photographer, and...
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Note that these aren't fakes, or photoshop fantasy: a small army of people, from costumers to cosplayers to models to hairdressers to make-up stylists were involved. So that's not a computer making Leia (Sabine Graissaguel) look like Carrie Fisher, or Superman (Jonathan Tuil) look like Christopher Reeve. That's their regular human faces, transformed with make-up and lighting.
Huh. I don't remember this.
Apparently, Gillian Anderson posed as the character of Morticia Addams back in 1997.
These pictures sure are colorful. View attachment 17584View attachment 17585
"Don't torture yourself, Mulder. That's my job."