If I remember correctly, Banpresto made the "Heat Hawk" and the "Gundam Gun" back in 2002. The amp and speakers are internal and you can actually recreate the sound effects from the series through pressing buttons on the guitars.

Is this Thing for real 'o' ?

Awesome axe.

...I just had to say it.

Woah . . . now that is cool. Combines two of my favorite things, rock and gundam.

Feel the full force of my mighty Axe!

You have my word...

10/10 for design. Sound-wise, it might suffer without a body to resonate the chords in.