In April of 2019 the Borderlands VIP Program was started as part of the promotion for the upcoming game. In addition to in-game rewards such as heads, skins and weapons there were also a series of wallpapers that were made available for download.
Below is an archive of these wallpapers that are no longer redeemable within the program.
Amara
FL4K
Moze
Zane
Mural of Mayhem
Borderlands 3
Mayhem Mask
Street Art
Neon Art
Psycho Knit