Answer:

usurper

AnswerCrossword Clue
USURPERPower grabber
USURPEROne in a coup group
USURPERThrone grabber
USURPEROne who expropriates
USURPEROne in a coup, e.g.
USURPEROne who takes over by force
USURPERSuccessful rebel
USURPEROne who seizes power
USURPERCoup leader
USURPERDisplacer of true ruler.
USURPERIllegal seizer.
USURPERUnlawful seizor.
USURPERIllegal occupant of a throne.
USURPERRoyal supplanter.
USURPERUnlawful seizer.
USURPERSeizer of power.
USURPERThrone seizer
USURPERSeizer like Caesar
USURPERCoup participant, e.g.
USURPERTakeover artist
USURPEROne taking something forcibly