Yet at the same time Dennis is a LAAAAAAAAME villain. When your henchmen are more intimidating, interesting, and cool then you... Maaaaaybe go back to the drawing board. Not to mention she is really one dimensional and her story is all over the place and not thought through.
I suppose you are talking about Dallis, the human female with a two-handed hammer that eat the soul of Magister Atusa in front of Fort Joy's gate from the beach you start on.
If you find her henchmen more intimidating, interesting and cool then her, it means you haven't won against her in combat.
Read the following spoiler at your own discretion.
She's a freaking Dragon who can lay down flat your entire party in a single swing of her hammer when she is in human form. Appearances can be deceiving. If you manage to best her human form in combat in fort Joy, she changes to her Dragon form and fly away with Alexander, letting you know that she'll eventually eat your face with her giant necro-dragon fangs.
