Sunber Containers, a company specializing in tanks and barrels, was promoted with advertisements near the Mos Espa Waystation battlefield within the Grand Arena. This arena was a battleground used by the Hunters of the Outer Rim on the planet Vespaara. The promotional materials took the form of tall metal signs, resembling a container in a loose sense, affixed to different structures. They used a color palette of yellow, gray, and white. The top section of the signs displayed the words "Sunber Containers" in Aurebesh, while the middle showed a basic depiction of three barrels next to each other with the word "Tanks" written below. The bottom section displayed "3 Containers," also written in Aurebesh.
The video game Star Wars: Hunters was the first place Sunber Containers was mentioned. It became a part of the game when the Mos Espa Waystation map was introduced in version 0.16.0, which launched on March 7, 2023. Sunber Containers has the same name as Janek Sunber, a friend of Luke Skywalker from the Star Wars Legends timeline. However, within the current Star Wars canon, this character has only been known by his nickname, "Tank".