I'm running an Earthdawn campaign and the party's current adversary is an unNamed Horror. In Earthdawn, Horrors fall somewhere between a demon in D&D and an Elder God in Cthulhu. It's important that this one be unNamed, because without a Name, it can't really grow or change too much, and it knows it. It's confined to garden variety evil.
I want to have the characters Name it, because that way when it does horrible heinous badness that it never would have been capable of without a Name, they'll know that they have some measure of guilt, since they made it possible.
I'm currently having it engage in distinctive behavior and take an particular interest in messing with one of the characters. It's going to start doing things that will give the party a bad rep, as well. I'm also giving them items/spells that will help them fight it, but only if they can use its Name. Since it doesn't currently have one, they would have to Name it.
Can anyone come up with other ways I can get them to Name the horror?