Roblox Username Checker

Rules a username has to pass

3–20 characters, letters and numbers only, at most one underscore and not at the start or end. Names also pass Roblox's content filter — a name can be "free" but still rejected as inappropriate. Nothing free-form survives the filter better than a clean two-word combination: try the username generator for ideas, then check them here. Pair it with a display name when you are done.