Col. O'Neill and Dr. Jackson in “Unfinished Business”

Look, we've run into this kind of thing before. Now, it's not a demon. It's demonesque I'll grant you, but it's just a big, ugly creature.

(quietly, to O'Neill) : Who's inhabited by a Goa'uld that gives it great strength, intelligence and the ability to regenerate.

Yes. It's a very smart, resilient creature.

(quietly) : In the service of Sokar, who, for all intents and purposes, is Satan to these people.

But it's not a demon.

(to Simon) : No, it's not a demon.