This item is a research development about life in simulation. An angel is a supernatural being in various religions,they are the closest to people. According to mainstream Christian theology, angels are wholly spiritual beings and therefore do not eat, excrete or have sex, and have no gender. Although their different roles, such as warriors for some archangels, may suggest a human gender, Christian artists were careful not to given them specific gender attributes, at least until the 19th century, when some acquire breasts for example.