"Pandor" (パンドール, Pandōru), is a character in the Yu-Gi-Oh! VRAINS anime. They are AI with free will created by the Knights of Hanoi to combat the Ignis. But unlike the Ignises, they have a limitation placed on their free will, which would automatically erase any thoughts which makes them think of humans as their enemies.
Pandor is showing to be a very helpful AI, offering assistance when need. She often smiles and tries to support her Duelists. She is also very observant of her opponents, but still respectful. Pandor also wishes to coexist with humans and is also very perceptive of Ai's inner emotions.
Pandor is able to make copies of herself, which can fit in a Duel Disk, similar to the Ignis.
As an anti-Ignis AI, she is immune to their programs, such as when Ai tried to control her. She also appears to be able to sense others' emotions, as she sensed Ai's hostility and sadness.
Pandor is an AI created by the Knights of Hanoi to assist them in hunting the rogue Ignis, Ai. Pandor was named after Pandora, the first woman in greek mythology who was sent by the Gods to cause discord and chaos amongst humans after being blessed with the gift of fire (Ignis) by Prometheus, thus being the very embodiment of her purpose of opposing the Ignis.
When Varis meets with Akira Zaizen, following Ai's declaration of war pm SOL technologies, the Hanoi leader introduces Pandor to Zaizen, with the latter instantly deducing her name significance. Varis explains that Pandor has limited free will and mechanisms to make sure she does not become hostile to humans. Pandor greeted Zaizen, displayed her duplicates, and installed one into Akira's Duel Disk. Pandor then vowed to be helpful to Akira. Later, Pandor's other three copies were given to Blue Maiden, Ghost Gal, and Gore.
Pandor uses an "Topologina"/"Topologic" Deck. Her deck is optimized to counter Ai's strategies based on the data obtained by the multiple Pandor copies installed into the Duel Disk of the duelists that faced Ai before. Pandor's Topologic Deck is also a nod to Varis's plan of "fighting poison with poison," having first utilized the Topologic link monsters to counter Cyberse monsters.