usurpateur bedeutet auf Englisch

usurper [usurpers]▼◼◼◼(one who usurps)
noun
[UK: juː.ˈzɜː.pə(r)] [US: juː.ˈzɝː.pər]Marcus became a usurper. = Marcus est devenu l'usurpateur.

phony▼◼◻◻(a person who assumes an identity or quality other than their own)
noun
[UK: ˈfəʊ.ni] [US: ˈfoʊ.ni]