HD-Alien Icons.zip is a release file of the Minecraft resource pack Heroes United: Ben 10 HD Silhouettes, made for Minecraft 1.16.5. It was published on April 2, 2021 and is 0 MB in size. For the full description, screenshots and every other version, visit the Heroes United: Ben 10 HD Silhouettes resource pack page.
How to install: Put the .zip into .minecraft/resourcepacks (do not extract it) and enable it under Options → Resource Packs.