Having problems with Network.Instantiate

The following code only spawns one character controller when I'm testing this (with two builds on separate computers connected to the same server). My problem is, I want it to spawn more than one character controllers(they are already prefabs in the variables) for every player in the game. Here's the section of the code (changed a bit to make the question make more sense) I am using to make this happen:

 var WhoIsEnemy : int
 var IAmPlayer : int //defines which player number you are
 var HowManyReady : int //defines how many players are ready to begin the game | not important

 function RandomEnemy(){
     if(NetworkPeerType.Server)
     {
         WhoIsEnemy = Random.Range(1, (HowManyReady+2));
         Debug.Log("Enemy is Player " + WhoIsEnemy);
         networkView.RPC("EnemyIsF", RPCMode.All, WhoIsEnemy);
     }
 }
 
 @RPC
 function EnemyIsF(EnemyIs : int){
     WhoIsEnemy = EnemyIs;
     StartGame();
 }
 
 function StartGame(){
     if(WhoIsEnemy == IAmPlayer)
     {
         Network.Instantiate(EnemyPrefab, transform.position, transform.rotation, 0);
     }
     else
     {
         Network.Instantiate(HumanPrefab, transform.position, transform.rotation, 0);
     }
 }

Update: I've been working on changing this code to work and it still only spawns 1 character controller that every player controls. Help please.