Hidden Cloud 

Several shinobi of the village have names that are based on letters of the Roman alphabet, such as "A", "B" and "C" for example. Also, several shinobi have names based on adjectives reflecting their personality such as Omoi(thought), Samui(cold), and Darui(dull) for example. 

In real life, the Kumogakure school is a ninjutsu school dating back to the sixteenth century.

The name of the village, as well as its kanji, is the Japanese word for "disappearance".