Chapter 25 of the Lotus Sutra describes the character of the bodhisattva Kannon (Avalokitesvara), with many faces looking in all directions and 33 different manifestations, and as a deity of compassion who helps those in all manner of need. Kannon became one of the most widely revered Buddhist deities at an early stage, and has been depicted in many different forms. The Infinite Life Sutra describes Kannon along with Seishi as the two companions of Amida Nyorai, and this gave rise to the frequently depicted bodhisattva trio motif.
Both of these statues are thought likely to have been solitary figures of Kannon, due to their standing posture and the lotus blossom (now missing) they are thought to have held in their left hands.
Kannon appears in the story as one of the companions of Amida Nyorai.