She has been portrayed by actress Jesica Ahlberg since the character's debut on October 19, 2015.
On October 14, 2015, Soap Opera Digest broke the news that Former Miss Alabama USA 2014, Jesica Ahlberg would join the cast as Darby, a college friend of T.J. Ashford and Molly Lansing-Davis.
Ahlberg has appeared in two primetime series, Banshee and Necessary Roughness and one feature film, Alvin & The Chipmunks: The Road Chip.
Ahlberg made her debut as Darby on October 19.
Darby hadn't been seen since February 17, 2016. Darby returned on July 15, 2016.
Darby first appears at The Haunted Star where she meets and takes a liking to Morgan Corinthos. She flirts with Morgan and then invites him to a party at PCU. T.J. Ashford and Molly Lansing-Davis arrive to pick up Darby for the party and Darby learns that Molly and Morgan are cousins. Darby then asks Molly to tell her all about Morgan. While they talk Morgan goes over to Kiki, who again rejects him and then Darby, Morgan, Molly and TJ leave for the party.
A few days later, Darby sees Morgan at the Floating Rib and they talk about the Halloween party at the Haunted Star. On Halloween, Darby and Morgan hangout and they end up having sex. Darby is seen again at the Floating Rib, where it is revealed that she knows Kristina Corinthos-Davis.
On January 27, 2016, Darby shows up at Sonny's coffee warehouse to see Morgan, who is now working there. Later on, she and Morgan start making out. Morgan tell her to stop because it does not feel right. Just as she was about to leave the warehouse, she meets Sonny and Carly.
On February 17, Kiki Jerome finds Darby and Morgan making out with their shirts off. Later, her and Kiki were about fight but Morgan steps in between the two of them. Darby gets offended when Morgan immediately rejects her for Kiki, and she leaves in disgust.
On July 15, Darby and Dillon Quartermaine went on date where they encountered Kiki and Morgan. Darby was annoyed when she realized that Dillion was also into Kiki, so she rejected him, but Dillon manages to change her minds when he kisses her. Darby invites him in her apartment and they spend the night together having a one night stand. In August, Darby revealed that she had Mycoplasma Genitalium and tells Dillon, who tells Morgan to get tested. It turned out that Dillon and Morgan had contracted it and so did Kiki through sleeping with Morgan.