Ermes Costello

Hermes Costello is one of the main characters in Part VI: Stone Ocean and is one of Jolyne Kujo's allies.

Story
She first met Jolyne when they were held in momentary captivity next to each other. Annoyed by the constant banging of Jolyne's head, -due to her humiliation earlier that day- she yelled at her to pipe down. She was amazed to hear Jolyne confess her innocence to her crime and admired her honesty. On their way to G.D. Prison, Hermes warned Jolyne to get her hands on cash as bribery was the quickest way to escape "prison life". In return, Jolyne saved Hermes from a brutal beating using her newly awakened Stand. Although not cell mates, the two have remained somewhat close to each other ever since.

When she was 17, her older sister allowed herself to be spotted by a homicidal car salesmen named Sports Max, sequentially saving her sister from his wrath but ending her life in the process. Enraged, she purposely had herself thrown in jail, intending to track Sports Max down. Her crime was armed robbery and it hadn't been her first offense; her sentence was to be 8 years.

She remained in intensive medical care after her battle with Sports Max and doesn't appear again until Jolyne escapes from prison. She was one of the final members in the last battle against Pucci.

Personality
Hermes is very prideful and loyal, preferring to act and think later.

She has a good sense of justice but punishes violently for any cross that comes her way.

Stand
See Kiss.

Trivia

 * She surgically enhanced her breasts to hide money.
 * She is the first woman protagonist in the series to have dreadlocks.
 * The marks on her forehead and chin are scars.
 * Her Steel Ball Run alter-ego is unnamed, although she still acts the same.
 * Due to her rather masculine manner and appearance, Hermes has gotten the endearing nickname aniki (big bro) among Japanese fans.