Pretty Riki was an associate of the Yazuka Boss, Matsumoto who participated in the killing of O-Ren Ishii's parents, Mr. Ishii and Mrs. Ishii where O-Ren was just nine years old.

After the killings had ended, Pretty Riki used a gun to destroy a vodka bottle, splashing the alcoholic contents across the room before lashing out at Matsumoto's abandoned cigar which eventually set the room and soon the whole building on fire.


  • There is fan speculation that Pretty Riki is actually a young Bill, but Quentin Tarantino has confirmed that this is not true and originally the anime was supposed to include a scene of O-Ren getting revenge on Riki as well as Matsumoto.