The idea being that the whole conquest of Europe and (attempted) conquest of Russia were the result of Napoleon compensating for being tiny.
It turns out however that Napoleon himself was 5' 6.5", which was the upper end of average for his population, geography, and era. This would have put him in the 'perfect' height range. Tall, but now weirdly tall.
Due to the nature of memes it isn't exactly known when this got started, but it is assumed that it is because his body guards were all well over six feet and well formed so they didn't look like giants. While not paranoid (then) very reasonably assumed that the majority of the known world had a good reason to murder him. So he hired the best (in an age where swords were still very important that meant tall and fast) security he could.
So a true Napoleon Complex would be a being of absolute confidence, who does exactly what they want regardless of public opinion, and ignoring the horrible consequences, Then simply hires the best security.
,,,,Michael Bay has a Napoleon Complex.