Elba II inhabitants
List of individuals incarcerated or employed at the asylum on Elba II. As of 2269, the inmate population was fifteen.

Named 
 Donald Cory, governor
 Garth
 Marta

Unnamed

Garth's guard 
This guard released Garth from his holding cell, believing him to be Dr. Cory, as Garth had changed his appearance to resemble the governor. It was the first time that Cory became aware of Garth's powers. ()

Inmates

Andorian 

This Andorian inmate was a ward patient at the Elba II asylum in 2269. ()

Humans 
These six Human inmates participated in several of Garth's antics, including his meal with James T. Kirk and his coronation ceremony. ()

Tellarite 

This Tellarite inmate was imprisoned at the Elba II asylum in 2269. ()

Personnel lists
Unnamed Andorians
Unnamed Humans
Unnamed Tellarites