Re: Northern Guard (Canadian Super Hero team)
I think a Vancouver-based team should include an aquatic character, an Aquaman or Sub-Mariner analog. Or maybe a character with water-based powers. In any case, Vancouver's a coastal city, so make use of all that water!
Vancouver also has, as I recall, the second largest Chinatown in North America (right after San Francisco). A super from that part of the city--a martial arts expert or Chinese mystic, maybe--would certainly seem appropriate.
If you want a different flavor of mysticism, you could go Native. The 2010 Winter Games featured a lot of First Nations stuff in the opening and closing ceremonies. Even if you choose not to go with the mystical route, a Native team member of some kind would be appropriate.
Just a few suggestions. I hope these will spark some ideas for characters!