Charles Gunn
Charles Gunn, or Gunn to his friends is a die-hard member of Angel's group at Angel Investigations.Originally from downtown LA, Gunn was devastated when his sister was turned into a vampire by the local vampire population. To this end, he took up fighting vampires with his friends, with a care-free attitude to life, only caring to defend those around him from the vampires.
Gunn eventually met Angel, whom he was suspicious of at first, but later began to trust him more and more, eventually becoming a fully fledged member of Angel Investigations. He went with Angel and Wesley to the demon dimension of Pylea in order to save Cordelia.
He got involved in a romantic relationship with Fred, which lasted for quite some time. They eventually split up after they had grown too far apart. When Angel decided to take over the Wolfram and Hart offices, Gunn was given a gift by the senior partners of Wolfram and Hart. They endowed him with all the common law knowledge and demon law knowledge that might be neccesary to help Angel in his new role.
Despite this, he still remains an active member of the group, and is still loyal to Angel.