Hi guys, I thought it would be interesting to compare Hans to another main antagonist from a live action movie The Illusionist, Crown Prince Leopold. As well as their motives and personality.

Crown Prince Leopold

Crown Prince Leopold was actually base on the real-life Crown Prince Rudolf of Austria-Hungary, the only son of Emperor Francis Joseph and Empress Elisabeth (Sissi) of Austria.
Sadly to say, Rudolf allegedly committed suicide along with his 17 years old mistress, Baroness Mary Vetsera at this Hunting Lodge at Mayerling. Known as the Mayerling Incident.
Crown Prince Leopold is actually the opposite of Rudolf, because he is plotting to usurp the Austrian thron and to use his marriage to win the Hungarian half for himself! A young magician steps in and with the help of Leopold's fiance. They expose the Crown Prince and thus committed suicide.

Hans of the Southern Isles

Like Leopold, Hans appear to be a swell guy during his introduction and the song Liebe is an Open Door. Even when Anna searches for Elsa, it wasn't only until that Anna returns to Arendelle and when his true nature is shown.
He's planning to usurp the Arendelle thron and plotting a Coup D'etat Von killing Elsa in order to usurp the throne.
Unlike Leopold, Hans does not commit suicide, but is imprison and ship back to the Southern Isles where his brother will punish him.

Conclusion

So there Du have it, these 2 characters have similar motives and personality, if Du haven't seen The Illusionist. Go ahead and watch it!