Rikiel

Rykiel (リキエル Rikieru) is a minor antagonist featured in Part VI: Stone Ocean. He is one of Dio Brando's illegitimate children with an unnamed woman.

Synopsis
Prior to meeting Enrico Pucci and obtaining a stand, Rykiel suffered from what seemed to be constant panic attacks: his eyelids constantly fell and his knees went bad. He would attempt to take exams in school, only to suffer from his conditions, and would stop attending school because of them. These conditions were so severe that he wasn't even able to drive a car, and this dramatically decreased his self-confidence.

Upon meeting Pucci and obtaining his stand, Rykiel instantly became more confident, going as far as to present himself to the heroes believing he could easily defeat them. Though new to his abilities, Rykiel demonstrated a fine use of his powers, weakening Jolyne Cujoh's body enough that he could fight her easily, and demonstrating enough anatomical knowledge such that he was able to manipulate Jolyne, Hermes Costello, and Emporio Alnino's conditions to deal various biological setbacks to them.

It was when Jolyne set herself on fire to counter the effect of Rykiel's stand that he began to lose confidence, forcing Rykiel to set himself ablaze as well, believing in finding her weakness by obtaining her pain and attempted to conquer the odds. Jolyne, however, came out on top, dealing a massive blow to Rykiel and crippling and insuring his death. Mortally wounded, Rykiel used his own stand on himself, removing his sense of pain and holding onto Jolyne to force his stand into a last-ditch effort to kill her. However, she allowed this and continued her attack, coincidentally using his hand to block his ability to sap her heat. Defeated, Rykiel reflects on his past and the coincidence that was able to characterize his defeat and Pucci's power, and reveals that Weather Report is actually Pucci's younger twin brother. Just as he reveals this, however, he is finally silenced by Hermes.