Jelissa

 is a member of the Followers of the Apocalypse in the year 2161, and acts as a guard for the Los Angeles Public Library.

Other interactions
can shed some light on the more secretive activities of the Followers to the Vault Dweller, and can be further convinced to give them some weapons training.

Appearances
is a cut character from Fallout, who was apparently planned to be an armed Follower patrolling the faction's library. However, in the released game there are no armed Followers, just students.