SD doll (スーパードルフィーーーーーーーー) is a spherical joint doll introduced from 1998 by Volks Company of Japan, and developed by Hiroshi Akio, Dollie. The name Dollfie is composed of "Doll" and "Figure". With the expectation of "being the tallest doll work", it was officially named "Super Dollfie".

1999 when it was published in February, it advertised in the model magazine to publicize the way of customization. Not so much a doll as a model. Sales and output are also quite small, almost all of which are reserved sales.

This kind of doll specially made for someone is called SD doll, and some people in China also call it "silly doll", because SD doll is a perfect human being, and its appearance is very cute and beautiful, which is very popular with girls.