Create object instances.

Hi, im really new in unity and need some of help, my problem is that i need to create instances of objects but
without inheriting from monobehaviour, because when i create a new object (character for example), unity send me an alert that i can’t do it. More simply, i need add scripts to objects(sprites) and use these objects with the script.
Thanks!

Have you tried creating prefabs of your sprites with the required scripts attached & then instantiating them as needed?