Willi is a common name in German-speaking countries, often used as a diminutive form of Wilhelm. It can also be a standalone name. Willi is typically associated with friendly and approachable personalities, making it a popular choice for both children and adults. In popular culture, the name Willi has appeared in various forms of media, including books and films. It is often used to represent characters who are adventurous or humorous. The name's simplicity and charm contribute to its enduring popularity in different contexts.