‘Once Upon A Time’ Season 4 Spoilers: Casting Begins For 'Frozen' Storybrooke Characters

Season 3 of “Once Upon A Time” concluded with the shocking reveal that Queen Elsa would be joining the residents of Storybrooke, Maine, but according to one new report, more “Frozen” characters are also set to join the hit ABC live-action series.

According to a report from TVLine, “Frozen” animated stars Princess Anna and her love interest Kristoff will be brought to life alongside Queen Elsa on ABC’s “Once Upon a Time” come this fall. Despite the 2013 Disney animated film’s voice actors Kristen Bell (Anna) and Idina Menzel (Elsa) being invited/or expressing their interest in reprising their characters on the program, the showrunners have reportedly started the "Frozen" audition process.

Despite fans suggesting names such as actresses Dianna Agron and Amanda Schull to portray their dream Elsa, producers are still searching for their perfect ice queen. According to TVLine, the Arendelle royal should be in her “late-20/early-30s.” While there are no specifics features listed for potential Anna’s, the character is described as being similar to the Disney Princess, the ad listing “fun-loving” and “fearless optimist” as her top qualities. Kristoff is described as being “handsome” and “hearty” with a sometimes “gruff” demeanor.

While viewers will having to wait until the show’s Season 4 premiere this fall to catch up with their favorite "OUAT" characters, the audition process has revealed some upcoming storyline spoilers. Rumor has it that Elsa will take up a majority of the “Frozen” storyline (reportedly 9 episodes) with Anna and Kristoff starring in the series “a bit less.” Elsa, who has the power to freeze whatever comes in her path, will also reportedly battle with her magic and the threat it poses during the season.

While there isn’t much of information regarding Anna’s storyline on the program, she is rumored to be moving in with Kristoff, a transition which is said to be a tough move for her outdoorsman beau. “When we first meet Kristoff on ‘Once,’ he is adjusting to life at the castle. Including sleeping indoors for the first time in his life," reads TVLine's report.

Unfortunately for Olaf fans, the summer-loving snowman will reportedly not be included on the program despite producer Adam Horowitz’s hopes to bring the animated character (originally voiced by actor Josh Gad) to the small screen. “The show bosses laughed,” TV Line reported about the idea of using CGI to bring Olaf to the series.

“Once Upon a Time” Season airs Sundays at 8 p.m. EDT this fall on ABC.