Intantiated objects being created but being invisible...[PICTURES]

Note: Incase you get confused, playership_1 is the enemy prefab, it just won't let me change the name

I am making a laser defender game in my online course (2D) and so what we are doing is instantiating, and/or spawning enemies as children of positions that are marked by gizmos. When I start the game, it looks like this:

When I start the game, I only see the spaceship and the black background. When I pause and go into the scene, this is what I see:

I have checked the z-value, even though I don't have a background. What is wrong? Please help.