who is the creator of this film?
Screenplay written by Jennifer Lee, who also co-directed with Chris Buck.
Frozen (2013 film)
"Frozen" underwent several story treatments before being commissioned in 2011, with a screenplay written by Jennifer Lee, who also co-directed with Chris Buck. 
who did the voice of hans in frozen Santino Fontana
wiki:11484252
Frozen (2013 film) [SEP] Introduction
It went on to surpass "Toy Story 3" (which was also distributed by Disney) as the highest-grossing animated film at the time as well as the highest grossing musical film before being surpassed by the remake of "The Lion King" in 2019; it also ranks as the 16th highest-grossing film of all time, the highest-grossing film of 2013, and the third highest-grossing film in Japan. It was also the highest-earning film with a female director in terms of US earnings, until surpassed by Warner Bros. Pictures' "Wonder Woman". With over 18 million home media sales in 2014, it entered the list of best-selling films in the United States.