NBC’s website has an interesting biography for one of its actors in its new drama, Believe. 

Chung, known for her role as Mulan on Once Upon a Time, will be playing a role in Big Hero 6, assumed to be Gogo Tomago. 

This is the second non official cast announcement for the film (and was revealed in a way similar to Santino Fontana’s in Frozen.) Interestingly, both she and TJ Miller (Fred) currently have roles on Disney TV shows.