Ruby Maxwell is Nikki's older sister and Rodrick's love interest appearing in the 2003 Warner Bros. Animation series, The Dork Diaries. She has long brown hair and green eyes. She is voiced by Candi Milo. Her main outfit is composed of: a black sleeveless shirt, black skirt, black fishnet pantyhose and black high heels. At her age, she is 18 years old. At her romantic dance with Rodrick, her outfit is composed of: a black sleeveless dress and black high heels.
- Elizabeth Maxwell (Mother)
- Albert Maxwell (Father)
- Nikki Maxwell (Younger Sister)
- Brianna Maxwell (Youngest Sister)
- Rodrick Heffley (Love Interest)