A new report confirms that two new characters from the movie "Frozen" will feature in "Once Upon a Time" Season 4. The roles will reportedly be played by Elizabeth Lail and Scott Michael Foster. It is still unclear who will play the role of Elsa. Spoilers ahead.

According to a report by TVLine, Elizabeth Lail and Scott Michael Foster will be playing the roles of Anna and Kristoff respectively. Anna is the optimistic and daring younger sister of Elsa, the queen of Arendelle. Kristoff is an ice harvester in love with Anna.

Both the characters appeared in the animation movie "Frozen." The two characters will now have to make the transition from the movies to the TV show. Fans may also get the chance to see the kingdom of Arendelle.

Another new character in "Once Upon a Time" Season 4 is Elsa. Rumours about the character suggest that it may be a negative role. Fans may have to prepare for seeing Elsa as a villain in the upcoming season of the TV show.

Meanwhile, the adventures of the other characters continue. The relationship between Regina and Emma is expected to get worse. With Regina's relationship with Robin Hood ruined, a new romance may spark with Emma taking a lead role.

The character of Regina has evolved over the years. Fans can expect the character to continue to grow and change as the season progresses. New experiences and lessons of life will affect the character of Regina and also impact her interactions with other characters.

"Once Upon a Time" Season 4 is also expected to explore the death of Robin Hood's wife Marian. Readers who have been following the series will remember that Robin spoke about losing his wife in season 3. The death of Marian may not have anything to do with any illness, as indicated in season 2.

"Once Upon a Time" Season 4 is slated to be aired in the coming fall. The episodes will be aired on Sundays at 8 pm. Fans are eager to see the new characters in action and what new twists await them in the tale.

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