Until mid-beta testing, Dominic Knack was unnamed and simply identified as Accessory Vendor. Like all other Gear Vendors, he retained the title of Accessory Vendor until late beta testing. Throughout beta testing, Dominic Knack wore an orange Concert Superstar Shirt, even though the shirt was only available in light blue to players.
Dominic Knack wears a Prismatic Baseball Cap which constantly changes color during gameplay.
Dominic Knack's name is a play on the word "knickknack", which refers to a small worthless object.