LOS ANGELES (Reuters): An oversized personal health-care robot assistant might seem out of place next to the princesses and furry animals that have won over legions of fans, young and old, in animated films. But for every young girl belting out ‘Frozen’ princess anthem ‘Let It Go,’ Walt Disney Co is betting there’s a nerd who will root for the geeks and robot fighting evil in ‘Big Hero 6.’ Disney’s big film this year leads a field of offbeat animated movies featuring little green monsters and a Day of the Dead love triangle.