Ninja are immediately recognisable in the west, their imagery and behaviour in most cases only loosely based on the original Japanese qualities. Movies, TV series, comics, video games and a whole world of merchandise demonstrates the continued interest in these mysterious action heroes. Not surprisingly my interest in the ninja is their connection to the elements. That gave me a reason to see the 2017 Lego movie ‘Ninjago‘, ostensibly a movie for children, where the elements are featured. My interest has also lead to reading translations of the original ninja manuals and sourcing other information from Japan. Comparing the different representations of the ninja (west and east, modern and traditional), the ninjutsu they practice, and their relation to the elements has been intriguing – and complicated. These are my impressions so far.