Seen in most every episode of Trigun is this furry feline likeness, typically in a very comical instance at the height of tensions. The Kuroneko Sama or Black cat is a perennial favorite of fans.

Trigun takes place on a desalant desert style planet named Gunsmoke, with the taste of the wild west. The main character, Vash the stampede, is the most hunted man in the verse with a 60 Double Billion Dollar price on his head. He is actually not a human but a humaniod plant, beings that are tapped as a source of power and energy for the planet Gunsmoke. As a plant Vash's body does not physically age past his mid-twenties. He carries a unique .45 long colt revolver with a top break reloading mechanism and the barrel aligned with the 6 o'clock chamber instead of 12 o'clock chamber. When he lost his left arm in an incident with Knives (his twin brother) he had a cybernetic replacement with a concealed submachine gun inside. Though he has these formatible weapons he doesn't even crack off a shot until the fifth episode due to his explotation of natural resources and ethics of murder. With the two insurence ladies Derringer Meryle and Stungun Millie following close behind he makes his way through the planet running into the mobile preist Nicholas Wolfwood. Wolfwood tags along with his portable confessional and huge cross packed with weaponry used only for good. In the later parts of the series it is revealed that the terraforming of the desert planet has stalled, and the dark tone settles in. After losing Wolfwood, Vash finally see's that the only option is face Knives and one way or another this all will come to an end.