Yeah Firkraag is great... "My servants are subtle, when I wish it." Just how I'd imagine a Red Dragon. Of course, I had to chop him up for being evil but what can you do?
Irenicus, too is a great bad guy. Really quite chilling in his thirst for revenge.
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"Our deepest fear is not that we are inadequate.
Our deepest fear is that we are powerful beyond measure."