You can change your name for once through the Settings menu in Toon Blast.
- Tap the top right Settings Menu button (it looks like a gear!)
 - Tap the Change Name button
 - Enter your name that you would like to use
 - Enter the same name a second time to confirm the spelling
 - Tap the Yes button to change your name
 
You cannot change your name for a second time, so please be sure that you enter your name correctly.