Yuya Fungami (噴上 裕也 Fungami Yūya) is a secondary ally featured in the fourth part of JoJo's Bizarre Adventure, Diamond is Unbreakable. Introduced as an antagonist in "Highway Star", he becomes an ally in "Enigma Boy". Yuya is a motorcycle gang member who was made into a Stand User by Yoshihiro Kira and prompted into attacking Josuke and the others. Selfishly attacking Rohan and Josuke in a high-speed road chase with his Highway Star, Yuya later assists Josuke in the fight against Terunosuke.