How to change the character of the player without removing the original character?

To better explain, I know how to change the player's character, but when one does, the original character is removed from the game. I want the player to either shrink (I would prefer this method if possible) or control something else without the removal of the original character.

Current code:

local player = game.Players.LocalPlayer
local playergui = player.PlayerGui
local mouse = player:GetMouse()
local char = player.Character
local emerald = script.Parent
local emeraldEquipped = false
local cam = game.Workspace.CurrentCamera
debounce = false

emerald.Equipped:connect(function()
    emeraldEquipped = true
end)

emerald.Unequipped:connect(function()
    emeraldEquipped = false
end)

mouse.KeyDown:connect(function(key)
    if emeraldEquipped == true then
        key = key:lower()
        if key == "r" then
            if debounce == false then
                debounce = true
                char.Animate:clone().Parent = game.Workspace.Superhero
                player.Character = game.Workspace.Superhero
                cam.CameraSubject = game.Workspace.Superhero.Head
                cam.CameraType = "Follow"
            elseif debounce == true then
                if game.Workspace:FindFirstChild(player.Name) then
                    player.Character = game.Workspace:FindFirstChild(player.Name)
                else
                    player:LoadCharacter()
                end
                debounce = false
            end
        end
    end
end)