Unit Logbook

The Unit Logbook is a unit database introduced in Fire Emblem Awakening

Overview
The Unit Logbook is a in-game database that stores information of additional units obtained through various means, either by completing a playthrough or through StreetPass. In both of its appearances, it allows the player to buy additional units for their army.

Awakening
The Unit Logbook allows the player to buy other Avatars as additional units in the army. The player receives the version of their Avatar that was used upon completing the Endgame or the Avatar of a StreetPass team upon defeat or recruited by paying a fee. The price of the recruited Avatar depends on their rating, which is factored by their current Level, class tier, Stat spread, and equipped skills. Current equipped weapons are not included. Einherjar are also included in the Unit Logbook. The player can freely update their current save file's Avatar in the Logbook at anytime.

Fates
Fates expands upon Awakening's Unit, allowing the player to store all potential units in the Logbook, not just Avatars and Einherjar units. Players can acquired Unit cards either by completing StreetPass and Online battles, purchasing them through the Card Shop in the player's My Castle, and completing the Endgame of either route. For the last option, up to five members of the player's current army can be saved to the Unit Logbook each time an Endgame is completed. Additionally, these units stored using this method also retains ALL skills learned at that point and can be freely exchanged at any point.

Players may still buy copy versions of units in the book, with the price determined by the unit's current level, class tier, stat spread, and skills. Units acquired by completing the Endgame cost more than a normal Card Shop version of the same unit. Players may additionally purchase any equipped skills and all learned skills by Endgame acquired units.