Big Sky is making some changes and additions to its cast ahead of its third season. Recurring player J. Anthony Pena (above) has been upgraded to series regular status for the upcoming season. Pena plays Deputy Mo Poppernak, the upbeat partner of Jenny Hoyt (Katheryn Winnick) at the Sheriff’s Department.

Also starring Kylie Bunbury, Jensen Ackles, Jamie-Lynn Sigler, Brian Geraghty, Dedee Pfeiffer, Omar Metwally, Anja Savcic, Janina Gavankar, and Logan Marshall-Green, Big Sky follows the investigations of a Montana deputy detective and a private investigator.

Luke Mitchell, Seth Gabel, Henry Ian Cusick, Anirudh Pisharody, and Madalyn Horcher have also been added to the cast of the ABC series in recurring roles, per Deadline. Here are some details about their characters:

Mitchell plays Cormac, backcountry outfitter Sunny Barnes’ charming son. He’s the worker bee on her camping trips, making sure guests are always equipped and comfortable.

Gabel portrays Walter, a recluse who lives in a cabin in the Montana wilderness. His unpredictable nature can make for menacing run-ins with stray hikers.

Cusick is Avery, a well-meaning, successful tech entrepreneur who books himself and his stepdaughter Emily on Barnes’ camping trip.

Pisharody plays Luke, a city slicker whose girlfriend Paige dragged him onto Sunny Day Excursions for his birthday.

Horcher portrays Paige, a New Yorker and Luke’s girlfriend who booked them both on Sunny’s camping trip.

Season three is set to begin airing on September 21st.

What do you think? Are you a fan of Big Sky on ABC? Are you looking forward to watching the third season of this ABC series?