how to change the character in photon angry bots demo?

how to change the character in photon angry bots demo?
player prefab.

In order to change a prefab that is instantiated with code into the scene. You can temporarily drop the prefab into the scene, modify the properties you would like to and then apply those changes to the prefab. After you apply the changes to the prefab you can then delete that instance back out of the scene.