Noob is the default avatar in Roblox, characterized by its simple, blocky design and bright, almost neon-colored clothing. It typically features a lime green shirt, blue pants, and a simple, round head. The Noob's appearance is often associated with new players who haven't yet customized their avatars, making it a recognizable symbol of beginners in the Roblox community. Its simplistic design is both iconic and easily identifiable, often used in memes and jokes within the Roblox player base. The Noob's lack of customization highlights the potential for personalization and self-expression that Roblox offers its users.