Doreen is a common female name that has origins in the Irish language, meaning "sullen" or "maiden." It gained popularity in the early to mid-20th century, particularly in English-speaking countries. The name is often associated with qualities such as strength and independence. In popular culture, Doreen has appeared in various forms of media, including literature and television. One notable character is Doreen Green, also known as Squirrel Girl, a superhero in the Marvel Comics universe. She is known for her unique abilities and positive attitude, making her a beloved character among fans.