Username

A username is a unique string of characters which can be used to identify a user on Roblox. Players can select any available username of their choice upon creating an account and can later change it for 1000 Robux.

History
During the early stages of Roblox, usernames could have spaces in them, such as John Doe and Jane Doe, this feature was later removed on New Year's Day 2008 due to users impersonating other users by using spaces, and using their full names to create their username.

In February 2016, underscores were added back into the allowed list of characters in usernames (the first time since they were initially removed back in 2006).

In 2018, users were prevented from having usernames made up of only numbers. This was to prevent users creating usernames of phone numbers and because Roblox was adding a login by phone number feature. Currently, Roblox usernames can consist of 3-20 characters using letters, numbers and a single underscore ( _ ) which must not be the first or last character of the username.

Changing usernames


Originally, users were only allowed to change their names due to either privacy concerns (such as the username being a player's full name) or per request by the moderation team due to the name violating the ROBLOX Terms of Service. If a user did not provide an alternate name, the username would then be changed to [ Content Deleted NUMBER ] for usernames changed prior to 2014 or ResetUserID for names changed after 2014.

A feature released on October 22, 2013, allowed users to voluntarily change their usernames for a 1,000 Robux fee. All usernames that are changed must satisfy all username requirements and policies.

Replacement
Since Autumn/Fall of 2018, [ Content Deleted ] names have been replaced with [ Account Deleted (NUMBER)]. This has been discovered in October of 2018, through a user following multiple of these names.

Name sniping
Name sniping is an activity people do to find rare or lucky names only earlier people could get. For example, "Player" is an example of a name snipe. Most accounts are made for the purpose of taking the name before somebody else can; these accounts are often left inactive or rarely used. Certain groups also have communities that are dedicated to name sniping, which perpetuates the trend. However, this has caused many name snipe accounts to be terminated, due to users password guessing these accounts specially for selling them or showing off in these groups. Usernames with spaces in them are the main targets of password guessing.

Username trends
Aside from namesniping, people often use username trends to make a unique name for themselves and still take the idea of namesniping or adding initials before a name. Some username trends are mainly used by online daters.

A list of popular name trends:


 * (Name)Wyd
 * iiOmq(Name)
 * Xx(Name)xX
 * xxx(Name)xxx
 * x(Name)x
 * xOmq(name)
 * (name)HD
 * (name)Daily
 * (name)Gaming
 * (name)Gamer
 * (famous user's name)ALT
 * (name)YT
 * (name)Aourh
 * (name)_(number)
 * ii(Name)
 * ii(name)ii
 * (name)RBLX
 * iiOmqitz(name)
 * mlg(name)
 * dantdm(name)
 * dan(name)
 * denisdaily(name)
 * denis(name)
 * roblox(name)
 * (name)123
 * (name)123456789
 * (name)1234567890
 * (name)slayer
 * (name)(number)
 * pro(name)
 * mr(name)
 * i(name)
 * savage(name)
 * (name)savage
 * Itz(name)
 * x(name)
 * miss(name)
 * xx(name)
 * Pusheen(name)
 * (name)(number)
 * (name)69
 * (name)BR
 * IAm(famous user's username)
 * TheReal(famous user’s username)

Username restrictions
Usernames cannot:
 * have inappropriate phrases in them
 * be all numbers
 * have spaces
 * have 2 or more underscores
 * have more than 20 characters (only achievable via Xbox/iOS related glitches)
 * have less than 3 characters
 * be the same as someone else's username
 * have any special characters in them (e.g. periods, ampersands, etc.)
 * be a banned user's username
 * contain underscores as the first or last character of the username
 * contain any private information about someone (e.g. real-life names, age, etc.)
 * be a user who changed their name

Common topics in usernames

 * Movie Characters
 * Game Characters
 * Certain YouTubers
 * Pets
 * Family

December 2016 exploit


In December 2016, there was an exploit that allowed new accounts to be created with the name of another, such as by making the accounts "David " and "David". People also used this to make 2 letter accounts, such as "pi " and "hi ". This was patched days after the exploit was discovered and all users that were made with the exploit were deleted. At the same time, users were also able to create users with a dash (or hyphen) in their name, e.g. Builder-Guy. All users with dashes in their name got reset.

Usernames with 21+ characters
In Roblox, it is possible to have usernames with 21 or more letters using glitches. These usernames mostly occur in Xbox-related profiles.

In 2011, an iOS glitch allowed people to create accounts with a username consisting up to 50+ characters.

Trivia

 * Oddly, when changing username the important statement said still states that forum posts carry on.