Delphine Rousseau made her first appearance on 3 March 2016. She is portrayed by Emmanuelle Bouaziz.
Delphine is Jack Branning's ex girlfriend who is due to get married, she collects Jack from Walford East Tube Station by taxi after he visits his former wife, Ronnie Mitchell. Delphine produces her wedding dress, but prevents Jack from seeing it. Delphine is later seen being married but Ronnie thinks she is being married to Jack and interrupts the wedding.