Motaricke has short black hair, black eyes, and a bit of stubble on his upper lip. He wears a maroon vest over an off-set white long-sleeve shirt that's worn over a black shirt, khaki pants, and gray shoes.
Greed Island arc
After Gon and Killua acquire their first specified slot card, Motaricke furtively tails them. He has a moral dilemma whether or not to steal their newly acquired card. Ultimately, he decides to steal them with his "Thief" card; he rationalizes that if he doesn't, other players will. In his confrontation with the boys he demands they hand over the card, but they refuse. So, Motaricke uses his rare spell card and it's destroyed the moment he uses it. This is because Gon and Killua took precautionary measures to prevent their card from being stolen.
A couple of months afterward, the Bomber(s) capture and enslave Motaricke with another player. Genthru forces Motaricke to roll the Risky Dice a couple of times and then sequentially use a "Lottery" card to help them obtain the "Wild Luck Alexandrite" card. Both of Motaricke's attempts fail him to obtain the rare card. Later on, the Bomber(s) disguise him and another captured person as Sub and Bara. This is so the Bomber(s) could use the Tax Collector's Gauntlet on Tsezguerra and his team to steal their cards.
Later on, Motaricke's name is mentioned in Gon's binder.