Looking like a walking marshmallow and moving with a dainty waddle, lovable robot Baymax is the best thing about this family-friendly Disney animation.

The tubby inflatable automaton gives the film its heart and humour as ‘a personal health care companion’ who gets pushed into a more actively heroic role by teen tech prodigy Hiro Hamada (voiced by Ryan Potter) when a supervillain in a kabuki mask starts running amok in their home town.

Yet for all the whizzy flying scenes and fisticuffs, the film becomes a lot less engaging when the plot takes this turn, revealing itself as yet another comic-book origin story, this time for a band of super-geeky superheroes.