Robot Devil is here to blast your old sub-octave fuzz out of the water.  With Volume.  And rhythmic oscillation.  And Squeeling noises you can control with your guitar’s knobs.

One or two poorly tracking octaves down spew from the ‘Devil’s out hole, punishing your amp and your mind with squarewaves of doom.

Also, has a totally decent overdrive in it.  If you’re into that kind of stuff.