Player Rename Add-on 1.20+

Mod Player Rename allows you to rename a player and also has over 50 name and chat animations. You can simply rename a player using the menu in Minecraft PE. The pack is perfect for pranking your friends or just changing your own name. Additionally, the new animations will make the gameplay more enjoyable.

How does it work?
Add the admin tag for yourself
Type the command .rename
Instantly close the chat
Choose a player to rename
Write a new name
Select an animation