The Vees are a Freudian Trio. Valentino is Id; Velvette is the ego; Vox is the superego. They keep each others worst qualities in check, with the boys often being the ones causing issues.
It's makes sense Alastor can hack into Vox's broadcasts. Radio waves are used for even satellite dishes of the 21st century technology.
Vox can causes Pentagram City to black out if he loses his temper when hooked up to the grid.
Vox's name means "voice" in Latin.