Targeting system HELP please

hi guys, I'm having a bit of trouble getting my enemies to target my characters. On a single character it's fine, but when I switch character mid stage the enemies still focus on where the first character was/is located. Think of it like Mega Man only swapping characters other than weapons.

The script attached is what I have so far and any help is greatly appreciated. Thank you!

 using UnityEngine;
 using System.Collections;
 
 public class EnemyAI : MonoBehaviour {
     public Transform target;
     public GameObject[] targetAll;
     public int rotationSpeed;
     public int stopDistance;
     public int sightDistance;
     public int turnDistance;
 
     
     private float moveSpeed;
     public float moveSpeedAttack;
 
     
     //float souls = PlayerPrefs.GetInt("Souls");
     
     
     private Transform myTransform;
     
     void Awake(){
         myTransform = transform;
         targetAll = GameObject.FindGameObjectsWithTag("Player");
         
         GameObject go = GameObject.FindGameObjectWithTag("Player");    
         target = go.transform;
     }
 
     // Use this for initialization
     void Start () 
     {
     }
     
     // Update is called once per frame
     void Update () 
     {
         targetAll = GameObject.FindGameObjectsWithTag("Player");
         float distance = Vector3.Distance(target.transform.position, transform.position);
         
         Debug.DrawLine(targetAll.position, myTransform.position, Color.red);
         
     if(Vector3.Distance(target.position, myTransform.position) < sightDistance)
         {        
             myTransform.position += myTransform.forward * moveSpeed * Time.deltaTime;
             moveSpeed = 0;
         }
         
         
         if(Vector3.Distance(target.position, myTransform.position) < stopDistance)
         {
         moveSpeed = 0;
         }
         
         if(Vector3.Distance(target.position, myTransform.position) > stopDistance)
         {
         moveSpeed = moveSpeedAttack;
         }
         
     if(Vector3.Distance(target.position, myTransform.position) < turnDistance){
         //Look at target
         myTransform.rotation = Quaternion.Slerp(myTransform.rotation, Quaternion.LookRotation(target.position - myTransform.position), rotationSpeed * Time.deltaTime);
             }            
     }
 }

PS: I'm getting this error if it helps- error CS1061: Type UnityEngine.GameObject[]' does not contain a definition for position' and no extension method position' of type UnityEngine.GameObject[]' could be found (are you missing a using directive or an assembly reference?)