How to activate a GameObject from another scene?

Hi there,

I have 3 scenes. One "Menu", "Play" and "CharacterChange" scene. In my CharacterChange scene you can slect a character with a button. I want to make the button enable that charcter in my "play" scene, but i'm stuck on how to do so.

"Play" scene:

"CharacterChange" (or slection) scene:

Here is code on the "select button":

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 using UnityEngine.UI;
 using UnityEngine.SceneManagement;
 
 public class CharacterInfoDisplay : MonoBehaviour
 {
     public GameObject Cuber_go;
     public GameObject Cylin_go;
     public GameObject Spherrow_go;
     public GameObject Select;
 
     public CharacterInfo Cuber;
     public CharacterInfo Cylin;
     public CharacterInfo Spherrow;
 
     public Text nameText;
     public Text specialAbilityText;
     public Text descriptionText;
 
     public int pageCounter = 0;
 
     public bool CuberSelect;
     public bool CylinSelect;
     public bool SpherrowSelect;
 
     public static Movement MovementScript;
 
 
     // Use this for initialization
     void Start()
     {
 
     }
 
     // Update is called once per frame
     void Update()
     {
         OnlyOneSelected();
         PageCounterInfo();
     }
 
     public void Left_2()
     {
         if (pageCounter == 0)
         {
             pageCounter = 2;
         }
         else
         {
             pageCounter--;
         }
     }
 
     public void Right_2()
     {
         if (pageCounter == 2)
         {
             pageCounter = 0;
         }
         else
         {
             pageCounter++;
 
         }
     }
 
     public void Selected()  *** // This is where the character is selected ***
     {
         if (pageCounter == 0)
         {
             CuberSelect = true;
             CylinSelect = false;
             SpherrowSelect = false;
         }
         if (pageCounter == 1)
         {
             CuberSelect = false;
             CylinSelect = true;
             SpherrowSelect = false;
         }
         if (pageCounter == 2)
         {
             CuberSelect = false;
             CylinSelect = false;
             SpherrowSelect = true;
         }
     }
 }