Are Roblox Characters Legos?
Roblox characters are not Legos; they are 3D models that can be changed by users by adding different clothes and other items. The Roblox documentation says that avatars are character models with many unique features that let users interact with the world and change how they look by buying clothes and other items from the Marketplace.
Avatars are created in 3D modeling software, then customized with animations for the body and face, clothes, and other items. Then, these parts are brought into Roblox Studio, where they can be used to make avatar characters and change how they look.
Roblox characters and Lego pieces may look a bit alike, but they are not the same thing. They are distinct entities from different companies.