The animators behind Big Hero 6 hid a few Easter eggs from other Disney films in San Fransokyo, including a few from Frozen. See how Olaf the Snowman and Prince Hans found their way into Big Hero 6.
These aren't the only Frozen nods that folks have spotted in the movie. For one thing, as soon as the first trailer came out, some eagle-eyed viewers noticed that Hans' mug is on a wanted poster at the San Fransokyo police station. It sounds like this might be just part of a larger featurette on Big Hero 6 Easter eggs that we'll see when the film comes out on Digital HD on February 3rd and on Blu-ray on February 24th.
[via Bleeding Cool]