[Beginner] How to instantiate only one child?

I’m doing the Space Shooter Unity tutorial, and in the “Extending the tutorial” video they make different Prefab for each kind of asteroid. Basically each asteroid has a logical GameObject, and other GameObject as its child for art work. But for all 3 kinds of asteroid, the logic is the same, just the art that is different.
My question is: is there a way to have the same logical parent GameObject hold the three models, and then choose which of them will spawn?
What I want to do is: “This object has the logic that will be inhereted by its children, but only one children will spawn at a time.”

Thanks.

Really, that sounds like you’re trying to make it a bit more complicated than needed. But if it’s just a matter of changing out a sprite, you can spawn the gameobject and then have some logic to pick a random sprite.

If it’s different models, then again, you can just pick a random model and attach it as a child. You can spawn a parent and then spawn a child and attach it.

Now, I haven’t looked at the tutorial, so I don’t know what logic they are using to detect when a bullet hits an asteroid, but if they are using certain colliders, you’ll just need to make sure the collider works for all sprites use. I also don’t know what scripts they are using and if anything would have to be hooked up.

Otherwise, there isn’t a reason not to use three prefabs.

In the case of the tutorial, the colliders would need ajustment, yes. I’m asking because I was wondering “if all asteroids follow the same rules, why shouldn’t I do all of them with the same parent class that dictates those rules? And how can I do that?”.
But thanks. I think instantiating the logic object → randomize one out of three art objects and make an instance of it → attach the art object as child of the logic object, works for what I was wondering.