The Spook Squad is a group of supernaturally powered (or at least aware) beings first assembled by James Tyveck to defend the city of Saskatoon from unnatural threats. This group had many members, and was ultimately successful in dealing with all of the threats that came about during the group's tenure, though their methods sometimes were less than wholesome.
Related:
Alexis Crowshaw
Eric Becker
John Norton
Sirka of the Summer Court
Evander Summers
Sean O'Connyl
Samael the Demon
(That's all of them I could remember off the top of my head, please feel all kinds of free to add more).