A mutant creature grown or howl
A long sustained monster bass note in the key of D.
Breathing monster - metallic and hollow
large pitched and reverberant growl
Deep purring rumbling monster drone
Low gruff electronic alien monster growl drone
Deep, reverberant monster breaths
Mutant aliens, Modulating buzz tones,granular synthesis
Electronic low rattling sound of monster or creature breathing, Repeating
Male exhalation - evil, demonic sound.