There are 4 unique codex entries in the Persons of Note section on Onderon. 3 are accessible to all players regardless of class or faction and 1 is faction specific.
Beast-Lord Akoru is obtained from speaking with Darth Savik during "Relative Harm" mission. It is obtained with The Untamed codex.
Codex type: Persons of Note | Faction: Imperial | Class: All
Associated Achievement: None
Darth Savik | Coordinates: -924, -318 | Location: Onderon: Hunting Lodge: Hunting Lodge Main Floor
Darth Savik is obtained from speaking with Darth Savik during "Conjuring Trust" mission as an Imperial player or interacting with the Door during "Palace Intrigue" mission as an Republic player. It is obtained with The Untamed codex as a Republic player.
Codex type: Persons of Note | Faction: Both | Class: All
Associated Achievement: None
King Petryph | Coordinates: -924, -318 | Location: Onderon: Hunting Lodge: Hunting Lodge Main Floor
King Petryph is obtained from speaking with Darth Savik during "Conjuring Trust" mission as an Imperial player or interacting with the Door during "Palace Intrigue" mission as an Republic player. It is obtained with the Darth Savik codex as an Imperial player or The Untamed codex as a Republic player.
Codex type: Persons of Note | Faction: Both | Class: All
Associated Achievement: Loremaster of Onderon
Senator Nebet | Coordinates: -924, -318 | Location: Onderon: Hunting Lodge: Hunting Lodge Main Floor
Senator Nebet is obtained from speaking with Darth Savik during "Conjuring Trust" mission as an Imperial player or interacting with the Door during "Palace Intrigue" mission as an Republic player. It is obtained with the Darth Savik codex as an Imperial player or The Untamed codex as a Republic player.
Codex type: Persons of Note | Faction: Both | Class: All
Associated Achievement: Loremaster of Onderon