When performing at live concerts, talking in interviews, and making music videos, the members of Hollywood Undead often wear masks on their faces.
The reason why they wear masks is not to hide their identity, but to look cool. J-Dog stated in an interview that they came up with their masks because "they didn't sound like anyone else, so why would they wanna look like anyone else?" Each member's mask has its own design. For each studio album, the masks are updated. Touring members of the band do not wear masks.
They often wear masks with cut-out mouths when performing live so that they can be heard easier. After performing 3-4 songs, they will take their masks off and continue the show unmasked.
The band stated that their masks are made by Jerry Constantine, a makeup effects artist and that the band designs them and he builds them. Every mask follows a pattern, which is most notable on Da Kurlzz's mask.
The newest iteration of the masks are different from any other album. The band has three masks each for the album V with a different color scheme on each.