Katherine LaNasa , Pom Klementieff , Matthias Schweighöfer and Micheál Neeson have joined the cast of the upcoming action-comedy “Mister.” The film marks the directorial debut of legendary second unit and action director Wade Eastwood, who has worked on the likes of “Mission: Impossible – Final Reckoning” and “Jumanji: The Next Level.” Rising child actress Serenity Grace Russell will also appear in the film. The project, which was first announced at last year’s Cannes Film Festival, stars Emmy