In Shvetambar tradition, Sambhavnath’s chief Gandhar (main Gandhar) is Charu. There are many Gandhars mentioned in various sources, but Charu is the prominent named Gandhar associated with Sambhavnath. The Digambar tradition may list different Gandhars or emphasize different details, but Charu is the commonly cited main Gandhar in Shvetambar texts. You can read more on Sambhavnath here