Poco's Sister

Peggy (ペギー Pegī) is a minor character introduced in Part I: Phantom Blood. She's the older sister of Poco.

History
Peggy first appears in Poco's flashback from when he was provoked by other kids. She suddenly appears and scares away the boys who bullies him, and asks him when he will stop being a coward and start fighting back. Upon hearing him answer with "tomorrow", Peggy replies with a slap for his cowardly behavior and takes him back home.

Phantom Blood
After Poco meets the heroes, they take him home just to know from his father, that his sister get out in the night to search for him.

Peggy appears on Dio Brando's castle, when he is trying to seduce her into join him in immortality. He uses a metaphor of a Rose which is beautiful when is new, but when get's old she becomes ugly and dies. Peggy refuses Dio offer and slaps him and say that he is a cursed monster. Dio then leaves and say if she doesn't like him, she can deal with Doobie. Doobie gets close to her and start to rip of her dress. She starts to panic, but the heroes appear and save her. When Doobie is killed and Jonathan Joestar and the crew engages in battle with Dio, she and her brother are protected by Straights from Page, Jones, Plant, and Bonham until Jonathan defeats Dio and the group gets rid of the remaining zombies.

After the battle's end, she last appears with her brother and the other characters on the port to wish Jonathan and Erina Pendolton a good honeymoon.