There are 2 bestiary entries from the missions accessed via the faction fleets. These codex entries are not required for any achievements.
The mission progressor for 'Uprising: Destroyer of Worlds'.
Codex type: Bestiary
Codex location: Cult of Gethul
Codex coordinates: 213, 80
Faction: Both
Class: Bounty Hunter - Imperial Agent - Jedi Consular - Jedi Knight - Sith Inquisitor - Sith Warrior - Smuggler - Trooper
Associated Achievement: None
Special Requirements: You must progress the mission 'Uprising: Destroyer of Worlds' to obtain this codex entry
The Kell Dragon codex entry skull.
Codex type: Bestiary
Codex location: The Scar
Codex coordinates: -907, 145
Faction: Both
Class: Bounty Hunter - Imperial Agent - Jedi Consular - Jedi Knight - Sith Inquisitor - Sith Warrior - Smuggler - Trooper
Associated Achievement: None
Special Requirements: You must progress the mission 'Operation: Scum and Villainy' to obtain this codex entry