Muggles are non-magical people in the Harry Potter series created by J.K. Rowling. They live in a world parallel to that of wizards and witches, unaware of the magical community that exists alongside them. Muggles lead ordinary lives, engaging in everyday activities without any knowledge of magic. In the Harry Potter universe, Muggles often serve as a contrast to magical beings, highlighting the wonders and complexities of the wizarding world. The term 'Muggle' has become synonymous with non-magical individuals, emphasizing their lack of magical abilities and their mundane existence.