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Griefer's skintone is white, His outfit consists of a neon green jacket, presumably leather, with red finishes, a belt, and a grey chain across his right leg. He additionally wears grey gloves. His pants are black with red finishes, pockets and shoes. His expression is smug, being an angered though smiling display with red colored eyes and two fangs sticking out from his closed mouth. Red Grind Hat, and long gray locks with green accents. He has some leaves and vines wrapped around his arm.

Griefer is shown to be insensitive and immature, frequently making offensive, hurtful, over-the-top comments adjacent to an annoying teenager. He enjoys wreaking havoc and commanding people with violence, far enough to have his father forcibly pull out the Venomshank for him. He also seems to own a lot of what he likes, having brand new "Green Goop" cards all to himself, and having his own two monitors, implying he may be spoiled.

Griefer also appears to be highly athletic, showing this in being able to jump large gaps and over dense vegetation, that players would usually need rocket boots and the iron sword to overcome.

Mayor Thaniyel, his father, has stated that Griefer was not always a bully, implying that he was a decent person before hearing the Venomshank's voices. This is confirmed after you return him to normal with a cure, where he eventually gets over his bratty personality and thanks the player for restoring him to health as well as offering his help to the player to assist him whenever they need it in the future.

Griefer speaks in leetspeak, often used by players in competitive games or hackers, where some letters are replaced with numbers. It is speculated he might have an addiction to Bloxy Cola and Witch's Brew, due to the piles of cans found all over his space, as well as a fact that a Woodsman mentioned an order of 1300 soda cans.

He cares in his own way. After being cured by player from the venomshank, they became friends.