How to change character when first character dies ?,Change Character Model mid game ?

I’m making a shooting game in which I want to change the character when my current character dies. I have made till the point where I can shoot and kill my current character. So, can anyone help me with the script on how to change to the 2nd character in mid-game.

Why not just simply have character prefabs and switch between them?

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class NewBehaviourScript : MonoBehaviour
   public bool PlayerDead;//Determine PlayerDead in your health script
    public GameObject InitialPlayer;//Drag the initial player into this slot
   public GameObject PlayerToSwitchTo;
    // Update is called once per frame
    void Update()
        if (PlayerDead)
            Instantiate(PlayerToSwitchTo, InitialPlayer.transform.position, Quaternion.identity);