In Roblox usernames, the “2 us” usually means a username with two underscores. Roblox usernames normally allow only one underscore, so seeing two underscores often points to a renamed, altered, or unusual account name rather than a standard signup name.

What it usually means

  • Standard Roblox usernames are 3 to 20 characters and can include letters, numbers, and up to one underscore.
  • Usernames with two underscores are not typical under the normal username rules.
  • In forum discussions, people often associate double-underscore usernames with accounts that were renamed, flagged, or otherwise handled specially.

Simple example

  • Normal: CoolPlayer_7
  • Not normal under standard rules: Cool__Player

Practical takeaway

If you saw “2 us” in a username post, it most likely means two underscores , not “2 users” or anything official from Roblox. The wording is usually slang or shorthand from forum/chat posts, not an official Roblox term.

TL;DR: “2 us” in a Roblox username almost always means two underscores in the name, which is unusual because Roblox usernames normally allow only one underscore.