But in the dub during the 20th century she goes by the name Rini "Chibiusa" Tsukino. She is given her nickname by Darien Shields in the manga and Serena in the anime in order to differentiate from the older Serena Tsukino, Sailor Moon. The nickname is a diminutive of her given name, Serena. In her own time period, she is always called Little Lady (or Small Lady).