[quote=Misticalicestorm]
The Hunters are only allowed to Capture, NO senseless Killing.
[/quote]

Senseless killing would be an entire massacre of the entire school for no absolute possible reasoning. Killing because of a particular purpose would be vigilante justice, and tracking and killing particular groups of people at leisure or for a living would be hunting.

In a sense, Hunter isn't exactly the correct term for your particular roleplay. You would look into more of a Kidnapper or an Abductor. Or an Authoritative Investigator of a secret society or law-enforcement group.