Mother and Father

and were the first two puppets Sasori ever created. They were made to resemble his parents, after they were killed while away at war by Sakumo Hatake. He made them in the hopes that doing so would help him feel loved. Because they were still only puppets this failed, and Sasori lost interest in the two and left them behind when he left Sunagakure. With his departure, the puppets came into the possession of Chiyo.

During Chiyo's battle with Sasori years later, Chiyo uses the puppets against Sasori, though he easily disables both with the Third Kazekage puppet's Iron Sand. After the Third Kazekage was destroyed and the Iron Sand's hindrance was nullified, Chiyo uses the puppets to stab Sasori through the heart in the form of a hug, allowing him to be close to them in death as he couldn't be in life.

Abilities
Over the years Chiyo made several modifications to them such as adding weapons to the puppets so that they could be used in battle. Both have a chakra shield installed in their arms, as well as steel wires that they link together with their fingers for cutting. The Mother puppet wields a katana, while the Father puppet wields a chain of kunai.

Trivia

 * They made an appearance in the game Naruto Shippuden: Clash of Ninja Revolution 3 as Chiyo's main method of attack. They also appear in a similar capacity in Naruto Shippuden: Ultimate Ninja 5.