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 cyan colored tongue. Sometimes what looks like blood seems to drip out of his mouth. He has dark navy-blue skin with sharp, cyan claw-like fingers, and also has what appears to be three shark-like gills on the sides of his body. He also has a vagina instead of a penis. It’s shown to be quite plump, tight and has soft bright cyan flesh. 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 his hat, the left one bent into a zigzag. In the past, Vox used to have an older-styled box TV for his head. He wore a black jacket over a yellow ribbed turtleneck, along with dark colored pants. He also wore a black top hat but without the symbols, and his left antenna was not bent. Vox is an egotistical, charismatic, and manipulative showman of an Overlord who craves attention. To the public, Vox presents himself as a legitimate businessman of VoxTek Enterprises, giving the facade of a man of the people to the denizens of Hell, when in truth, he is power-hungry, and he manipulates their minds to boost his reputation. He is highly intelligent and technology-savvy, and he is always keeping up with the latest trends and technology.[9] He seems to be able to hide his less desirable side in public and even in private unless he's pushed too far. Despite his egocentric nature, Vox is loyal to the interests of his fellow Overlords, the Vees, and seeks to maintain their collective image of power. As the most level-headed member of the Vees, Vox often acts as the de facto leader. Claiming the Vees' brand to be "perfection", he is often frustrated or outright angered if someone can jeopardize it, such as when he reigns in his fellow Vee, Valentino, from attacking the Hazbin Hotel in response to Angel Dust living there. Another element that earns his ire is his rival, Alastor, whom he utterly despises and might be intimidated by as he sees Alastor as a threat to his plans. However, despite his immense hatred for Alastor, Vox doesn't let it override his more pragmatic side once he calms down. He is against facing Alastor directly and seeks to uses other methods in order to gain the advantage. In "The Show Must Go On", he takes pleasure and joy out of seeing the staff of the Hazbin Hotel prepare to fight the angels, as he believes they stand no chance against them. This causes him to get verbally explicit and overly honest, as seen when he along with Valentino and Velvette watch the fight between Adam and Alastor at the Hazbin Hotel, commenting how the impending duel had given him an erection. He even shows this sadistic joy when he sees Alastor lose to Adam, saying that seeing Alastor suffer is better than sex, only to get angry when Alastor flees from the fight. Additionally, he is genuinely shocked at Niffty killing Adam but then changes to smiling.