The Fifth Cohort of the Twelfth Legion is where the unreferenced and unwanted recruits use to be sent.
A Legion was made of 10 cohorts, each one made out of 6 centurias of 80 men. Like in Camp Jupiter, the most prestigious one was the first, then the second and so on. Normally the Centurion of the first Centuria commanded the whole Cohort.
As recently as the 1980s the Fifth was accounted the best of the five Cohorts, but that all changed when Michael Varus, a legionnaire of the Fifth and senior Praetor led them to disaster in Alaska, losing the Legion's eagle and most of their Imperial gold weapons. He had thought he could complete the great prophecy, despite being warned that it was too early. Nobody knows what happened as everyone either died or went crazy and refused to talk about the experience.
Jason Grace had gone a long way towards restoring the Fifth's status by his leadership through the Titan war, but his unexplained disappearance destroyed all their gains and they went back to being a disgrace. Percy Jackson reverses the trend again in The Son of Neptune with Frank Zhang and Hazel Levesque, by bringing back the lost weapons.
When Percy arrives at camp and was to be placed with a group, Frank stands up for him, but because he is on Probatio, he isn't allowed until Hazel stands up and agrees to be his representative. Reyna agrees and Percy becomes part of the Fifth Cohort and learns they are the weakest group at camp. Percy helps turn the tide during the camp's War Games, where the Fifth manages to take down the enemy fort by themselves.
- Dakota (Senior Centurion)
- Hazel Levesque
- Frank Zhang (Centurion)
- Percy Jackson (Praetor)
- Gwendolyn (Former Centurion)
- Jason Grace (Former Praetor)
- Michael Varus (Deceased, Praetor)