Domnhall Gleeson’s General Hux might be completely loyal to the First Order in Star Wars: The Last Jedi but he’s not entirely comfortable with its leaders who follow the Dark Side of the Force and their powers.
It sounds as though that will change with Star Wars: The Last Jedi.
Though General Hux hasn’t been featured much in the marketing for The Last Jedi, he did survive the destruction of Starkiller Base at the end of The Force Awakens.
Thus, Hux will still be around to lead the First Order and bark orders in The Last Jedi.