The RX-0 Unicorn Gundam 02 Banshee (aka Banshee) is a mobile suit that appears in Mobile Suit Gundam Unicorn. It is built alongside its brother unit, the RX-0 Unicorn Gundam, under the Earth Federation's UC Project. Originally piloted by Marida Cruz, it was later assigned to Riddhe Marcenas.

After its completion alongside the Unicorn Gundam, the Banshee was eventually stationed on Earth with the Augusta Research Lab and tested for atmospheric combat. Rather than that of a Unicorn, the Banshee's motif is that of a lion, illustrated with gold accents on the forehead, a golden collar to signify a lion's mane (the Banshee originally had the same collar as the Unicorn but this was changed after it suffered damages while battling in space), and a much more elaborate horn/V-fin.

The Banshee's armor is almost entirely black, and its psycho-frame emits a golden-orange glow when the NT-D is activated. Although the Banshee lacks the Unicorn's distinctive La+ System, its performance in atmospheric combat is vastly superior, presumably because of a significant reconfiguring of the suit's operating system to account for Earth's gravity and the atmosphere's frictional resistance.

Combat improvements were made according to Unicorn Gundam's battle data, which had been relayed to the Augusta Research Lab. However, the two Gundams have no major operating differences. Aside from lacking the Unicorn's La+ operating system, the Banshee's raw performance is equal to that of the Unicorn. In other words, any modification to the Banshee (i.e. atmospheric combat performance) could also be applied to the Unicorn, making both suits equal in ability.

In the anime version, it weighs more than Unit 1 and has a larger effective sensor radius. Its armament also differs from that of Unit 1, as it is equipped with the added psycho-frame armaments "Armed Armor BS" and "Armed Armor VN", granting it better continuous battle capability than Unit 1, and it is said to have a higher degree of completion.