Nate has a short blond mohawk, wears a gray shirt with several designs on it, and tan camo pants. He has several tattoos on both arms. He has a Brooklyn accent.
There is some confusion as to whether he worked at a fireworks shop or a music shop. In his dialogue, he mentions having to get back to the store and invites Jimmy to come by if he ever needs music. However, he also refers to firecrackers several times, including threatening to shoot one at Jimmy if he misbehaves in the store, and his character model is called "Fire_Owner" in the data files.
Whether Nate worked at the fireworks store or music store, as both were removed from the final version of the game there was no reason to keep him in the game.