In science fiction, a Jovian is an inhabitant of the planet Jupiter.
In animated film and television
The plot of the anime Martian Successor Nadesico (1996) revolves around a mysterious invasion force based on Jupiter, named the "Jovian Lizards", or simply the "Jovians", and the attempts of Earth's forces, and specifically the ship Nadesico, to subdue this invasion.
In the Looney Tunes short Jumpin' Jupiter (1955), Porky and Sylvester's desert campground is sliced away and towed into outer space by a green, bird-like Jovian searching for earthly animal life. But Porky remains blissfully unaware, leaving Sylvester to be terrorized by the alien. In another episode this bird creature appears to be from Mars.
In Mobile Suit Gundam, specifically Victory Gundam and Crossbone Gundam, the main enemies are from Jupiter and are known as the Jovian Fleet.
The character Xûr from Destiny (2014) is a Jovian, but not necessarily from Jupiter. The game classifies Jovians as a race of transformed humans that live in the darkness beyond "The Reef".
The Danish physicist and philosopher Hans Christian Ørsted discussed the scientific, moral, and aesthetic convictions of the inhabitants of Jupiter in a thought experiment in the essay "All Existence a Dominion of Reason" of 1846.
Jovian (fiction) Wikipedia (Text) CC BY-SA