normal


Size_of_head = 8
while wait() do
    if game.Workspace.enemies:FindFirstChild("Zombie") then
        for i,v in pairs(game.Workspace.enemies:GetChildren()) do
            wait()
            if v:FindFirstChild("Head") then
                v.Head.CanCollide = false
                v.Head.Size = Vector3.new(Size_of_head,Size_of_head,Size_of_head)
                v.Head.CFrame = v.Torso.CFrame * CFrame.new(0,Size_of_head/2,0)
            end
        end
    end
end


boss


Size_of_head = 8
while wait() do
    if game.Workspace.BossFolder:FindFirstChild("Zombie") then
        for i,v in pairs(game.Workspace.BossFolder:GetChildren()) do
            wait()
            if v:FindFirstChild("Head") then
                v.Head.CanCollide = false
                v.Head.Size = Vector3.new(Size_of_head,Size_of_head,Size_of_head)
                v.Head.CFrame = v.Torso.CFrame * CFrame.new(0,Size_of_head/2,0)
            end
        end
    end
end