Vox is a tall and slim-figured, technology-themed demon who stands at approximately 7 feet.He sports a flat-screen television for a head, with the monitor projecting eyes with red sclera, small cyan pupils and different-colored outlines - black for his right and cyan for his left. While using his hypnosis powers or simply becomes enraged, his left eye gains a black spiral and the pupil becomes a cyan electric symbol.

The screen also shows a mouth full of sharp, cyan-colored teeth and a long pointed tongue similar to Valentino's, but cyan. Sometimes what looks like blood seems to drip out of his mouth. He also appears to have dark navy-blue skin with sharp, cyan claw-like fingers.

Vox wears a navy-blue tuxedo with the jacket sporting coattails, red-trimmed cyan lapels, thin cyan stripes and cyan lining, worn over a red-and-black-striped waistcoat which itself is worn over a collared bluish-white shirt with an upside-down broadcast symbol and a rather large, red bowtie. He also wears heeled dark gray dress shoes with cyan-colored laces, toes, and tips on the heels.

He also wears a small black top hat on his head, with red and blue designs reminiscent of a broadcast symbol and radio wave symbol, respectively. He has TV antenna that stick out the top of the hat, the right one bent into a zigzag.