Hi there,
 
At this time we don't offer an option to change usernames.
 
If you want to upload videos under a different name that you currently have you'll have to create a new account,
 
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Or, you can create a channel here:
 
The name you choose there will determine your URL, and the title is how other users will know you. e.g. if you name your channel "MyRumbleChannel" your channel's link will be "Rumble.com/MyRumbleChannel". And you can choose the title or display name "My Rumble Channel" which is what other users will see. Or you can make it whatever else you want.

"My Rumble Channel" which is what other users will see. Or you can make it whatever else you want.