How would I make a gamepass that gives the player a pet?

I have been trying to make a pet that spawns when a player buys a gamepass and follows the player with the gamepass, and that specific person, so two people can have a pet at the same time if they buy the gamepass. This is what I have so far, and its not really working, nor do I know how to make it spawn and follow the person when the have the gamepass.

repeat wait()until game.Players.LocalPlayer.Character
print("Pet Controller Loaded!")

function MovePet(pet, mode)
    local character = game.Players.LocalPlayer.Character
    local rpet = workspace.Pet
    local rmode = mode
    local inc = 0.7
    if mode == true then -- If this is true then make the pet float
        local base = character["Head"]
    else -- If its anything else other than true then make the pet go on the ground

        local base = character.LeftFoot


        local dir = CFrame.new(rpet.Position, base.Position).lookVector
        print(dir)
        for i=0,10,2 do
            rpet.CFrame = rpet.CFrame + (dir * inc)
            wait(0.05)
        end
    end
    end

while wait()do
MovePet("Pet",false)
end

If anyone could tell me how to fix this, that would be great! That's if you understand what I am trying to say haha.