Bogeyman (usually spelled boogeyman in the U.S.; also spelled bogieman or boogie man; see American and British English spelling differences), pronounced /bʊɡimæn/ or /boʊɡimæn/, is a common allusion to a mythical creature in many cultures used by adults to frighten children into good behavior. This monster has no specific appearance, and conceptions about it can vary drastically from household to household within the same community; in many cases, he has no set appearance in the mind of an adult or child, but is simply a non-specific embodiment of terror. Parents may tell their children that if they misbehave, the bogeyman will get them. Bogeymen may target a specific mischief—for instance, a bogeyman that punishes children who suck their thumbs—or general misbehaviour, depending on what purpose needs serving. In some cases, the bogeyman is a nickname for the Devil. Bogeyman tales vary by region. The bogeyman is usually a masculine entity, but can be any gender, or simply be androgynous.In many countries, a bogeyman variant is portrayed as a man with a sack on his back who carries naughty children away. This is true for many Latin countries, such as Brazil, Portugal, Spain, and the countries of Spanish America, where he is referred to as el “Hombre del costal”, el “hombre del saco”, or in Portuguese, o “homem do saco” (all of which mean “the sack/bag man”), or el roba-chicos, meaning child-stealer. Similar legends are also very common in Eastern Europe, as well as in Haiti and some countries in Asia.
El Coco (also El Cuco and Cucuy, sometimes called El Bolo) is a monster common to many Spanish-speaking countries.
In Spain, parents will sing lullabies or tell rhymes to children, warning them that if they do not sleep, El Coco will come and get them. The rhyme originated in the 17th century has evolved over the years, but still retains its original meaning. Coconuts (Spanish: coco) received that name because their brownish hairy surface reminded Portuguese explorers of coco, a ghost with a pumpkin head. Latin America also has El Coco, although its folklore is usually quite different, commonly mixed with native beliefs, and, because of cultural contacts, sometimes more related to the boogeyman of the United States. However, the term El Coco is also used in Spanish-speaking Latin American countries, such as Bolivia, Colombia, Guatemala, Peru, Mexico, El Salvador, Honduras, the Dominican Republic, and Venezuela, although there it is more usually called El Cuco, as in Puerto Rico, Chile, Uruguay and Argentina. Among Mexican-Americans, El Cucuy is portrayed as an evil monster that hides under children’s beds at night and kidnaps or eats the child that does not obey his/her parents or go to sleep when it is time to do so. However, the Spanish American bogeyman does not resemble the shapeless or hairy monster of Spain: social sciences professor Manuel Medrano says popular legend describes El cucuy as a small humanoid with glowing red eyes that hides in closets or under the bed. “Some lore has him as a kid who was the victim of violence… and now he’s alive, but he’s not,” Medrano said, citing Xavier Garza’s 2004 book Creepy Creatures and other Cucuys.”
In Brazilian folklore, a similar character called Cuca is depicted as a female humanoid alligator. There’s a famous lullaby sung by most parents to their children that says that the Cuca will come and get them if they do not sleep, just as in Spain. The Cuca is also a character of Monteiro Lobato’s Sítio do Picapau Amarelo, a series of short novels written for children which contain a large number of characters from Brazilian folklore.