Sasori's parents

Sasori's parents are never named; they are only referred to as and. The father is the son of Chiyo, and the mother is the daughter-in-law.

Background
The two of them were killed by Sakumo Hatake during a war, leaving Sasori in the care of his grandmother Chiyo for much of his childhood. After learning the art of puppetry, Sasori created puppets with their likeness, 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.

Abilities
Chiyo added 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 also wields a katana, while the Father puppet wields a chain of kunai.

Rescue Gaara arc
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.