Sheila E is a young and svelte Italian girl. She has long dark hair, a part of which is tied into several long, lighter colored, braids. An eight-pointed scar covers her left eye.

Sheila E wears a brassiere and underwear under a large loose coat connected only around her stomach. She also wears baggy leggings made from the same cloth, but lacks any footwear. Her outfit is covered with a triangular wave design reminiscent of Native American motifs.

PERSONALITY
Sheila E is introduced as a frank teenage girl. She doesn't chew her words and harshly criticizes Fugo for abandoning his team. Despite her indiscipline, it seems she fulfilled her role well as liaison between Passione and Squadra Esecuzioni. Sheila E prefers to take the most direct solution to any problem, typically destroying anything inconvenient.

Sheila possesses a strong moral code, hating evildoers and worshipping charismatic moral people like Giorno. After Illuso killed her sister, Sheila infiltrated Passione, planning to kill Illuso while also asking for permission. Consequently, she feels that she owes Giorno for killing Illuso and obediently follows his command. Because of her manichean view about right and wrong, Sheila has a psychological limit in that she cannot bring herself to attack someone she deems "more right" than she is.

Taking failure poorly, Sheila E has a tendency to place herself further into danger to atone for any perceived failure on her part.

The E in her alias stands for "Erinni," the Italian name of the Greek goddesses of revenge.