Username 666 is real...but its just a hacking youtube account. So..Dont search it on youtube or your computer will go bonkers. And you cant "X" it out because it wont work. thats what I mean by "Hacking"
"Username 666" is a popular internet urban legend that claims there is a cursed YouTube account with the username "666" that displays strange and disturbing videos. There is no concrete evidence proving the existence of such an account, and it is generally viewed as a creepy pasta or internet myth.
You can't. Youtube only lets you put letters and numbers in your username.
YouTube username is always your original name. The Gmail username is the ID which is used to log in. Then it is your name that shows up.
just the username. not the password
No.
Alex Day's YouTube username is Alex Day. He previously used the username nerimon.
osnapitzari
JedwardTV
You go to background and make a background with your username on it using a program such as "Paint" for PC's.
You can't change your username on YouTube, though you may create a second account with a new name.
Miley Cyrus's youtube username is mileymandy