Hey -
Just to make sure I understand your question, you are looking for a way to have the actor usable in the editor but not show up in game, is that correct? If you need to see the actor when working with it in the editor but not see it when the game is ran you can use the “Set Visibility” option to hide the mesh during gameplay. If it’s meant just for data storage you can not give it any mesh at all. Then any blueprint you create with the class will be able to be placed in the level and used to hold data/make calls but it won’t be rendered since there is nothing to render. I hope this information helps and best of luck in your project.
Cheers