Demona is a fictional character in the animated television series Gargoyles, voiced by Marina Sirtis. One of the primary antagonist in the series, Demona was once Goliath's lover and part of the Gargoyle Clan. She is consumed by a hatred of humanity, and has attempted several times to destroy it.
Demona was a member of the Gargoyle clan at Castle Wyvern, Goliath's mate and second-in-command. Like the rest of the clan, Demona originally had no formal name (though Goliath frequently referred to her as his "Angel of the Night".) The two mated and eventually had a daughter, Angela, who would join the Manhattan Clan 1000 years into the future.
Resentful of human prejudice toward her clan, Demona conspired with the Captain of the Guard to betray the humans inhabiting Castle Wyvern to the Vikings; However, Demona failed to convince Goliath to get the gargoyles away from the castle - her end of the bargain - and the clan was slaughtered during daylight. When Goliath returned with Hudson, he was devastated to see the murder of his clan, which he believed included his lover. Demona abandoned the castle with the intent of coming back once he had calmed down, returning only to find six survivors, including Goliath, under the Magus' stone sleep curse. This broke her heart, beginning the downward spiral in Demona's life of loneliness and pain.
Alone for several years, Demona had an encounter with a child named Gillecomgain, (based loosely on Gilla Coemgáin of Moray), scarring his face during a petty theft. Gillecomgain becomes The Hunter, a mercenary and assassin seeking revenge against her.
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Official Site: Disney
Links: Wikipedia The Gargoyles Encyclopedia GargWiki