Delphi is a 14-year-old Florian child who escaped from Hierophant Labs. They spent ages 5-14 in the lab being experimented on and trained to prime form. Delphi is fairly loyal but can be led to doubt herself and his opinions easily, other than with Icarus and Pandora, who he has complete loyalty. As an Advanced Florian Delphi has a number of special abilities, including growing flowers and vines out of areas of its own body, moving and growing plants around them, and growing plants inside of other people's bodies. This comes with the drawback of needing lots of sunlight and water or she will lose all circulation in her limbs to needing amputation and such die extremely easily.

Delphi was brought into the lab at age 5 and introduced to Icarus. The plan was to have Pandora replace Amon, The Devil, and fight along with Icarus, The Angel. They were trained there for years and were entered into fighting rings at The Colosseum before suffering an accident that resulted in her lungs having extreme issues and flower vines being wrapped around his heart. It had major surgery at the lab to correct this and save their life and such was not allowed to leave the lab for extended periods of time as a precaution. She stayed with just Icarus and Griffin until when he was 12 it met Pandora. They became extremely close with Icarus and Pandora after Griffin left the Lab. This came to a head when Icarus started getting nervous about Delphi being removed from the Lab due to her inability to be without specific medical attention. This resulted in The Escape. During The Escape, Delphi focused on keeping guards back and trying to block anyone from following them. In planning The Escape Delphi found escape routes and sent them to Pandora to be tested. During The Escape, Delphi also stole a large amount of medical supplies specific to his friends and their hybrid needs. They also helped Icarus steal weapons to lower the defenses of The Lab. After the escape from the Lab, Delphi got a job at a cafe to help support her friends. While there he met someone named Miles. Miles offered the spare room of creeps house to Delphi and its friends after becoming attached to them. There was a fight from Pandora who did not trust Miles but eventually, they moved into the Webb household spare room.