He first appeared during an investigation op by the SFPD in V9C2, and his organization was revealed to be a good-sided one in V9C3. After that point, Amy Chen joined their group. He was the focus of the Side Story set inbetween Volume 10 and 11 (Far Away From Home).
He was saddened by the death of Azrael in V14C2.
Jericho appears to be good-hearted and like the other members of his group, prestigiously intelligent.