There are 3 unique codex entries in the Persons of Note section on Ziost. 1 is accessible to all players regardless of class or faction and 2 are faction specific.
Agent Rane Kovach is obtained from interacting with the Scanner Console during "A Presence on Ziost" mission.
Codex type: Persons of Note | Faction: Imperial | Class: All
Associated Achievement: None
SIS Asset Brief: Agent Rane Kovachis obtained from interacting with the Scanner Console during "A Presence on Ziost" mission.
Codex type: Persons of Note | Faction: Republic | Class: All
Associated Achievement: None
Vitiate is obtained from interacting with the Lobby Terminal during "For Ziost" mission.
Codex type: Persons of Note | Faction: Both | Class: All
Associated Achievement: None