Carnals are one of the four demon bloodlines of the Underworld. They appeared to use the demon, Callum, as a spokesperson before his vanquish. Judging by their name, it is presumed that they specialize in enticing humans to perform sins.
Alfred, mostly known as Alfie, was the son of the leader of the Carnals and the last male heir of his line. He was vanquished by the Charmed Ones, his death leading Abigael Jameson-Caine to be deposed from the Demon Overlord throne when she didn’t take immediate action against the sisters.