Aziru

Ba'al's host was the host to the System Lord Ba'al. He was his host for an unknown amount of time, but likely at least thousands of years. After Ba'al was deposed, he stopped using his Goa'uld voice mostly and used his host's voice a lot. All of the Ba'al's including the original were killed over time, except one Ba'al. This Ba'al was removed from his host and died of the extraction. Ba'al's host survived the extraction and Vala MalDoran offered to help him cope as she knows what its like to be the host of a Goa'uld System Lord. Ba'al's host is the only known host of a major System Lord that has been freed from its symbiote.