While distinctly more sympathetic than the majority of villains who made deals with the Friends, Demona's rage and lust for revenge often sent her to darker forces for that little extra bit of help. She made several deals with the Friends, always making sure to pay off her debts in a timely manner. The Friends made many attempts to lure her over fully, but she never took the bait. Still, they keep an eye on her... She has worked with Macbeth many times, as the two have made connections with the Friends many times in the past.
Demona at GargWiki