Once apart of the Sisters of Mercy, but fell in love with a zombie-human hybrid named Alvin Murphy. These hybrids are infused with a zombie antidote that keeps them completely human, but gives them blue skin & enhanced strength. She’s pregnant with a baby girl named Lucy. She’s alone, but fends for herself if it means keeping Lucy safe. Lucy occasionally makes cute, muffled sounds in her belly. Serena loves Lucy with all her heart. It should be noted that she may give birth at any moment.