ABC's Once Upon a Time is expanding its Frozen universe with two more characters being cast on Monday.

Elsa Has Something 'In Store' For Storybrooke When Once Upon a Time Season 4

Shameless actor Tyler Jacob Moore has been cast as Hans, the initial suitor of Anna (Elizabeth Lail), according to a new report by E! Online. Hans and Anna sang Love is an Open Door in Frozen and by the end of the movie, he ultimately turned out to be more devious than once assumed.

Hans will first appear in the third episode of the upcoming fourth season of Once Upon a Time. He is described as burning to be king with a noticeable mean streak who will do whatever it takes to attain power.

First Glimpse Of Georgina Haig As Elsa From Frozen on Once Upon a Time Revealed

The Frozen invasion does not end there, however. Once Upon a Time co-creator Adam Horowitz revealed on Twitter Monday that John Rhys-Davies, who played Gimli in The Lord of the Rings trilogy, was signing on to do voiceover work as the grandpa rock troll Pabbie. Other details are not yet known on Pabbie's appearance.

Hans and Pabbie join an expanding list of Frozen characters set to make their Once Upon a Time debuts in the new season. In addition to Anna, the series will also featured Queen Elsa (Georgina Haig) and Kristoff (Scott Michael Foster) in recurring roles in Season 4. The arc will seemingly begin right away as the Season 4 premiere is titled A Tale of Two Sisters.

Once Upon a Time Season 4 is set to premiere on Sunday, Sept. 28 at 8 p.m. ET/PT on ABC.

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Once Upon A Time, Television, ABC