Johnson (Bountiful)

Sister Johnson is a Terran teacher of hydroponics on Bountiful. Melani Bradlaw was one of her students.

It cannot be said with certainty that Johnson actually exists, as he only appears in the memories of neurally resocialized Marine Ardo Melnikov, who was one of his students, said memories also including a Zerg invasion of Bountiful in which Johnson was likely killed. Most likely she does exist however.