I need in game name changer

Hello! Guy's i can't found in game name changer, like in Nodus for example.
If anyone have it please can you give it for me? (sorry for bad english)
P.S And anyone have AutoFishing mod like in Nodus? It's realy helpful for mcmmo plug.

why would you need this plmao?

I will make a mod that replaces your name with a custom name you set