“As a pagan, I’ve been curious to know what the general belief is on negative energies, or “demons”. Since we don’t believe in a hell, what are “demons”??”
Different Pagans have different beliefs. Paganism is not a one-set religion, or a religion at all – think of it as personal path/practice, a philosophy (like Buddhism). So it varies for different people and their own beliefs. Pagans certainly believe in the forces of negative energy, but not so much in demons as physical manifestations living underneath us in hell like most in most major religions.
Demons aren’t always real, physical creatures. Demons are also in spirit form. There are several books and many rituals on summoning demons, like The Key of Solomon – where he tells that he has summoned and controlled demonic spirits and entities. Of course, this should not be messed with or attempted. Regardless if you believe in demons or not, attempting any of the rituals of Solomon is probably one of the most dangerous things you can do – it can conjure things up that you might not be able to handle.
You can call them evil spirits, negative energy, demons, monsters, or anything else that comes to mind. It’s your own personal belief as to whether or not you want to include in exclude that belief in your practice.