People who are over the age of 13, as they are then teenagers and maybe a threat to the KND. But some best operatives are selected to stay in the KND as spies infiltrating the enemy headquarters or other things that exceptional agents can do.
“Samantha Chung-Yun is a Korean-American Girl, she was a teenage police officer and a bounty...Samantha Chung-Yun
“Craig Wilson is a American-New Zealander, He was selected to remain KND after his 13th birthday...Craig Wilson
“"My name is Cree!, And, You know that I'm not a member of your stupid Babies Next Door anymore...Cree Lincoln