what user id is -1 in roblox

In Roblox, −1-1−1 is usually not a real public user ID for a normal account; it most often shows up as a temporary or placeholder value in testing/studio contexts rather than an actual player profile.

What it usually means

• In Roblox Studio, local test players can get placeholder IDs like −1-1−1 or similar fake values.

• Roblox user IDs for real accounts are numeric identifiers tied to actual profiles, not negative placeholder numbers.

• If you saw −1-1−1 in a script, it likely means the player object was temporary, mocked, or the code was reading an uninitialized value.

Practical takeaway

If you're trying to identify a real Roblox account, use the profile URL or a proper username-to-ID lookup instead of assuming −1-1−1 is a valid account ID.

Example

A developer in Roblox’s forum described −1-1−1 showing up during Studio testing, and another thread noted temporary clients in local servers are not real Roblox accounts.

TL;DR: −1-1−1 is generally a test/placeholder value in Roblox, not a real user ID.