While the Manpower supportive of Creeds represent the majority of able-bodied, enthusiastic workers within the Colony, there are always those who are either unfit or otherwise occupied with mundane tasks.
Any Manpower which exists within the Colony and is not aligned to a Creed (due to insufficient Loyalty) is referred to as the Neutral Population.
Whenever Loyalty increases, players receive new Manpower tokens from the available pool of Neutral Population.
Likewise, when Loyalty drops, their forfeit these tokens back to the pool.
Should the Neutral Population become empty, Creeds which receive increases to their Loyalty will need to wait until the pool replenishes.
Note: the main way in which the Neutral Population pool replenishes is for other Creeds to lose Loyalty.