What is Pandora's gas-giant parent called in the Avatar film universe?

Polyphemus is Pandora's gas-giant parent in the Avatar film universe.

Pandora is a fictional moon orbiting Polyphemus in the Alpha Centauri star system. The moon is the primary setting of James Cameron's Avatar films, and its forests, mountains, oceans, and floating rock formations form the visual world explored by the characters.

Pandora is therefore not a planet in the franchise's astronomical setup. It is a moon, while Polyphemus is the much larger gas giant around which it travels. This distinction is often blurred in casual descriptions of the setting.

The name Polyphemus comes from Greek mythology, where Polyphemus is a Cyclops encountered by Odysseus. The Avatar setting uses several mythic or classical names, but its Pandora is a fictional world rather than the Pandora of Hesiod's poem.