test/Assets/PerfectWorld/Scripts/Managers/NPCManager.cs

using UnityEngine;

namespace PerfectWorld.Scripts.Managers
{
    public class NPCManager : MonoBehaviour
    {
        private static NPCManager instance;

        [SerializeField] private GameObject modelPlayerCharacter;

        public static NPCManager Instance 
        {
            get
            {
                if (instance == null)
                {
                    instance = FindAnyObjectByType<NPCManager>();
                }
                return instance;
            } 
        }

        public GameObject GetModelPlayer()
        {
            var player = Instantiate(modelPlayerCharacter);
            player.SetActive(true);
            return player;
        }
    }
}