The Bit Commander is a monophonic analogue synthesiser that will give you square-wave synth tones from your guitar notes.
Three knobs add in and turn up the level of three synth tones – two octaves down, one octave down and one octave up. The Base knob adds a distorted version of your guitar sound that sits really well with the octaves: it can actually do straight distortion if you choose to keep the synth tones turned down.
While it's easier to trigger stutters and glitches lower down, single notes played above the 7th fret track really well and sound really good, with the combination of four sounds offering many useful blends, all sharpened or dulled down by the Filter knob.
If you want to turn your guitar into a hard-edged mono-synth this will do it, but to add to the versatility, it also does a neat line in distortion with a touch of added octave.