There are 6 unique codex entries in the Bestiary section from Knights of the Eternal Thrones chapters. They are accessible to all players regardless of class or faction.
Gundark is obtained from killing a Gundark during "Knights of the Eternal Throne: Chapter II: Run for the Shadows" mission.
Codex type: Bestiary | Faction: Both | Class: All
Associated Achievement: Beastmaster of Dromund Kaas
Jurgoran is obtained from killing a Jurgoran during "Knights of the Eternal Throne: Chapter II: Run for the Shadows" mission.
Codex type: Bestiary | Faction: Both | Class: All
Associated Achievement: Beastmaster of Dromund Kaas
Sleen is obtained from killing a Sleen during "Knights of the Eternal Throne: Chapter II: Run for the Shadows" mission.
Codex type: Bestiary | Faction: Both | Class: All
Associated Achievement: Beastmaster of Dromund Kaas
Vine Cat is obtained from killing a Vine Cat during "Knights of the Eternal Throne: Chapter II: Run for the Shadows" mission.
Codex type: Bestiary | Faction: Both | Class: All
Associated Achievement: Beastmaster of Dromund Kaas
Voreclaw is obtained from killing a Vault Guardian during "Knights of the Eternal Throne: Chapter VII: Into the Void" mission.
Coordinates: 397, 226 | 397, 265
Codex type: Bestiary | Faction: Both | Class: All
Associated Achievement: None
Yozusk is obtained from killing a Yozusk during "Knights of the Eternal Throne: Chapter II: Run for the Shadows" mission.
Codex type: Bestiary | Faction: Both | Class: All
Associated Achievement: Beastmaster of Dromund Kaas