Delia Cap (born February 1, 2025 in Athens, Greece) is one of the adoptive daughters of Marci and Matthew Cap.
- Father: Matthew Cap
- Mother: Marci Cap
- Brothers: Cyrano Cap, Bazil Cap, Alexander Cap, Colin Cap, Denny Cap, Lysander Cap, Linus Cap, Maurice Cap, Mariano Cap
- Sisters: Kaylee Cap, Nicole Cap, Lily Cap, Olivia Cap, Sophia Cap, Kalonice Cap, Kassandra Cap, Sirena Cap, Lyris Cap, Madge Cap
- Her full name is Delia
- She and the rest of her vigintuplet siblings are interested in Greek mythology