Once Upon a Time Season 4 is going Frozen, and we're not just talking Elsa. As spoilers confirm, we'll also be meeting Elsa's sassy younger sis, Anna, and her love interest, Kristoff.

So far, there's no news on who will play these characters, so we're taking the chance to have some fun dream casting! We already picked a few actresses who would be great as Elsa and Anna, and now it's time to talk Kristoff.

The description for OUAT's version of this character is that he's a "handsome, hearty, salt-of-the-earth" guy whose "sometimes-gruff demeanor...can hide his deep love for Anna and her sister Elsa. 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."  It sounds like the actor will need comedy chops, and apparently OUAT's version of Elsa will be in her late 20s or early 30s, so we expect Anna and Kristoff to be in their 20s.

With that in mind, here are five actors we could see rocking this role.

Jonathan Groff

Why switch it up at all? Jonathan Groff was perfect as the voice of Kristoff, and his age and looks would work for the live action version, too. Sure, he'd need to dye his hair, but we can see him as a blonde.

Lucas Till

This X-Men: First Class and Days of Future Past star has the perfect looks, plus the charisma for the part. If they decide to keep the characters on the younger side, he'd be a good fit.

Mitch Hewer

We fell in love with Mitch as Maxxie in the original cast of UK's Skins. He's beyond handsome, and has an effortless loveability.

Luke Mitchell

This The Tomorrow People star is totally smokin', and we think he'd fit the role well.

Josh Hutcherson

OK, so this Hunger Games star is probably way too busy to drop by Once Upon a Time, but we think he'd be pretty perfect.

Who would you like to see play Kristoff? Let us know in the comments below!