How to set default pawn to Player0?

I was wondering how I can set my default pawn class within either the gamemode blueprint or C++ class to whatever player0 will be. I want to know this because every character within my game is the same class. It’s a fighting game.

Make a GameMode subclass.

In Project Settings > Maps & Modes > Default GameMode choose your new GameMode subclass.

Then right below that in Project Settings > Maps & Modes > Selected GameMode > Default Pawn Class select the pawn class you want to be default.