The Undead Army is the (rather large) group of fans who follow Hollywood Undead. Many of these "scenesters", as some would say, tend to wear masks to HU concerts, know many, most, or all of Hollywood Undead's songs, and the true Army is not afraid to show it's love for Hollywood Undead.

Undead for Life<3

When you eat dirt for the first time and leave your family to build a shack in the woods

people who beat the hell outta ppl who mess with Hollywood Undead and are all about Hollywood Undead
Plus the have to HAVE TO know the pledge which is

I Pledge allegiance to the mask,
That I’ll carry whisky in my flask,
And anyone to diss HU,

I’ll leave a bloody mess with you

For we are family, you and I,

3 Tears for you, we all shall cry,

All day all night, our flags will fly,
The Undead Army Till The Day We Die

a bunch of bad ass scenesters who love hollywood undead and will do anything for the cause

AND

they kick anyone's ass that disrespects scenesters or hollywood undead or the army or the empire