Empty Object as Parent without Rigidbody?

Hello, Currently I have one Empty object as parent and 3 player objects (where only one is enabled per time):

 PARENT EMPTY OBJECT With NO RIGIDBODY
 | 
 |-----Character 1 With his own rigidbody
 |------Character 2 With his own rigidbody 
 |------Character 3 With his own rigidbody

I don't know how to move my player.

If I move the Current enabled child Character object, the Parent Empty object will move along right? Is this bad for performance, since I am moving in it without making him have a rigidbody?

And finally Should be Kinematic or not?

Could you tell me how to manage the movement of the player possibly keeping this structure parent/children?

Is This a Good setup ?

Thank you =)