Will Arnett and David Harbour Vivien Killilea/Getty Images; Charley Gallay/Getty Images Share on Facebook Share on X Google Preferred Share to Flipboard Show additional share options Share on LinkedIn Share on Pinterest Share on Reddit Share on Tumblr Share on Whats App Send an Email Print the Article Post a Comment Logo text Will Arnett has stepped in to replace David Harbour in Tony Gilroy's Behemoth! drama, The Hollywood Reporter has confirmed. Harbour had earlier pulled out of the project that also stars Pedro Pascal and Olivia Wilde after the wrap of Stranger Things, apparently in need of some downtime. Harbour plays the role of Jim Hopper on the Netflix drama. Gilroy is directing Behemoth! for Searchlight Pictures and represents his first major work from since he wrapped up all his commitments to season two of Andor. That project earned him an Emmy Award nomination for best series. Related Stories Movies Writers Roundtable: Bradley Cooper, Guillermo del Toro and More Talk Crafting "Infectious" Dialogue and Scripting as Grief Therapy TV Critics' Conversation: 'Stranger Things' Goes Out (Finally) With a Confused and Protracted Bang Gilroy wrote the script for Behemoth! and is producing with Sanne Wohlenberg and John Gilroy, both of whom he worked with on Andor. The recasting for Behemoth! followed comic and actor Arnett coming off a star turn in Bradley Cooper's third feature film, Is This Thing On?, where he appeared opposite Laura Dern. He also has credits in cult TV comedies like Arrested Development, 30 Rock and BoJack Horseman. While Searchlight has not put out an official logline for Behemoth!, sources tell THR the story is described as a love letter to the music of the movies and the people who make it. It tells of a musician, to be played by Pascal, from a family of musicians who returns to Los Angeles. Wilde will play the man's former lover. Senior vp of production Rayne Roberts and creative executive Cameron Chidsey are overseeing for Searchlight Pictures, reporting to heads of production and development DanTram Nguyen and Katie Goodson-Thomas. THR Newsletters Sign up for THR news straight to your inbox every day Subscribe Sign Up tom blyth 'People We Meet on Vacation' Director on Navigating Fan Castings for Hit Book: "Go Get Paul Mescal." "Paul Mescal's Kind of Busy" Wagner Moura Actor Awards Noms Analysis: What to Make of Performers From Non-English-Language Films Being Totally MIA and 'Sinners' Maxing Out Tangled Sarah Catherine Hook Says It Would Be a "Dream Come True" to Play Rapunzel in Live-Action 'Tangled' Heat Vision Madelaine Petsch Makes Last Stand Against Masked Killers in 'The Strangers: Chapter 3' Trailer Oscars 2026 Please Invite Me to the Oscars Before It Goes Away SAG Awards Actor Awards, Formerly SAG Awards, Nominations: 'One Battle After Another' Leads Film Nods With 7 as 'The Studio' Tops TV With 5 tom blyth 'People We Meet on Vacation' Director on Navigating Fan Castings for Hit Book: "Go Get Paul Mescal." "Paul Mescal's Kind of Busy" Wagner Moura Actor Awards Noms Analysis: What to Make of Performers From Non-English-Language Films Being Totally MIA and 'Sinners' Maxing Out Tangled Sarah Catherine Hook Says It Would Be a "Dream Come True" to Play Rapunzel in Live-Action 'Tangled' Heat Vision Madelaine Petsch Makes Last Stand Against Masked Killers in 'The Strangers: Chapter 3' Trailer Oscars 2026 Please Invite Me to the Oscars Before It Goes Away SAG Awards Actor Awards, Formerly SAG Awards, Nominations: 'One Battle After Another' Leads Film Nods With 7 as 'The Studio' Tops TV With 5