new Monobehaviour as variable returns warning...

Hi, I have to create an Array with contains a few classes which based on Monobehaviour. This is the code I'm using:

 Object[] scripts = new Object[]{Flare, Knife, Speer};

Now I get a warning everytime I start the game:

You are trying to create a MonoBehaviour using the 'new' keyword. This is not allowed. MonoBehaviours can only be added using AddComponent(). Alternatively, your script can inherit from ScriptableObject or no base class at all

I know that a Monobehaviour script has to be attached to a GameObject and can be referenced from there, but now I have a few questions.

1. Is there a way to use Monobehaviour without a GameObject?

2. What can happen if I ignore the warning?

3. Can I just replace Monobehaviour with ScriptableObject?

Thanks for help!