Lara Parker played Angelique on the original Dark Shadows soap opera, but Green has said that a variety of influences helped her re-create the character for Tim Burton's film.
"I got inspired by many things, you know? The music of Janis Joplin, Bette Davis in her more bonkers roles. Also, Jack Nicholson sometimes, his great way of being on the edge," Green said, reports Flicks and Bits.
"It was many things. But also there's something quite human about her. I think she may be the 'baddie' but she's kind of a damaged character. Damaged by love."
Green further suggested that she loved playing such an off-kilter character whose motives aren't entirely clear.
"Angelique is definitely a bit cuckoo. She's a very big character, she's mad about Barnabas," the star explained. "When we first meet her it's in the 18th century, and she's a servant working for the Collins family.
"She has this affair with the young master, Barnabas, but he breaks her heart when he rejects her for Josette (Bella Heathcote).
"She's not very happy. She's a witch and she takes her revenge by turning him into a vampire and decides to lock him in a coffin for several centuries... as we all do, you know, when we get a bit hurt."
Green previously said that she relished the chance to work with acclaimed director Burton, who she described as "a filmmaker and a painter that [she] worship[s]".
Dark Shadows opens on May 11 in the US and the UK.
Watch a trailer for Dark Shadows below:
Photo gallery: Dark Shadows' European premiere:
Copyright: PA Images Jonathan Short/AP