

Gunn feels responsible for his friend's death, believing that it would not have happened if he had still been around to help in the fight. However, his work with his new 'family' often leads to conflicted loyalties in the episode " Belonging", Cordelia is accidentally sucked into a portal to Pylea while a member of Gunn's old street crew, George, succumbs to the bite of a vampire.

Although he initially regards his time with Angel Investigations as a "paying side-gig," Gunn eventually becomes a full-time member of the gang, gaining mutual respect for those he fights side-by-side with while finding his place in the world. Angel recognizes Gunn's strength and often calls on him if he needs back up in battle or if he needs protection for the people he cares about when he cannot protect them himself.

It is this loss that forces Gunn to question his own motives and become more receptive to Angel's help, realizing he cannot do everything alone. Gunn has no choice but to stake his own sister, a decision which continues to haunt him through the series. Eventually, Angel wins Gunn's trust, but unfortunately not in time to save Alonna from being turned into a vampire. Later on, a gang of vampires, who are at war with Gunn's group, attack their hideout, kidnapping several group members in the process, including Gunn's sister Alonna. Gunn is introduced in the Season One episode " War Zone", when he observes the vampire Angel roughing up a blackmailer and tries, unsuccessfully, to dust him. Possessing the mind of a military strategist and the strength of a brawler, life in the city hardened Gunn to the extent that his life became less important than the cause, resulting in him trading his soul for a truck in a deal with a demon named Jenoff when he was only seventeen, because he believed he had no future (cf. In his teens (although now Gunn is in his early 20s), Gunn rose through the ranks to become the leader of a group of street-fighters who protect their turf from vampires using guerrilla tactics. Although he had a few brushes with the law, he acted as a modern day Robin Hood to keep the streets in his neighborhood safe. Gunn was born in the Badlands, a section of inner-city Los Angeles where the police would not go, and looked after his sister, Alonna, from a very young age.
