Known as Puer Apulie (boy from Puglia), known to history as Stupor Mundi, he wore several crowns on his head, including that of Emperor of the Holy Roman Empire. But his controversial relationship with the Papacy cost him three excommunications and contributed to making him a much-discussed figure. Thus, the figure that contemporaries and historians portray to us is even more difficult to decipher. All we are left with is the certainty of his extraordinary nature and his intellectual vivacity. This short aims to paint and tell his story, offering a lively and colorful portrait.