Judith, our heroine, a unicorn maiden. Her unicorn is named Anwen.

Kenny, a young druid (or shaman) who can call forth spirits.

Valkyrie, supremely detached Nordic ice-bitch. Her element is fire, and her function is to give Kenny courage... despite the fact that he hates spirits which have anything to do with death. She dislikes unicorns.

Undine is a tiny water spirit who follows Kenny. Because her power is antithetical to Valkyrie's, she hides in Kenny's pouch while Valkyrie is around.

Sylphiel is a wind spirit who teleports Kenny to Judith.

Sorceror, the evil nasty. Yes, his name is "Sorceror." His schtick is killing a unicorn and taking its horn, then kidnapping the unicorn maiden and doing something nasty to her involving knives. Exactly what he does varies from time to time; he's not one of your boring villains who gets caught in a rut.

Various rough types who hang out with Sorceror.

Eris

Dankan, a thick old fart who's associated with Eris in some way.