Night Riders: What would David Hasselhoff say? Leaving off the K isn’t going to be enough to avoid comparisons, is it?
Riders: Could potentially have some inappropriate connotations, just like “Rough Riders.”
Snow Dogs: A little unusual, but still easy to recognize and fierce/cute as is needed.
Spirit: I may be prejudiced by having seen “The Spirit” movie, which was entirely awful, but I don’t like this name much, as I mentioned before. It’s fine on its own, but almost any visualization of it will be offensive to some religion or another.
Thunder Hawks: A few other teams use this mascot, but it’s not that distinctive, either.
Warhawks: “War” isn’t really a connotation we need for sports.
Wings: Well, I do like “Live and Let Die” a whole lot.
Wool(l?)y Mammoth: I actually like this one. It’s unusual, but it’s also a fierce beast comfortable in cold climates, and bonus, it is larger and scarier than a bison. The downside would be all the extinction jokes.
Fighting Greens: Greens are lettuce, guys. “Fighting Green” could be a team; “fighting greens” would be a belligerent salad.
Feel free to disagree with me in the comments, but stay civil, and please, nothing about the old nickname. This thread’s not about that; if you wish, I can direct you to other threads where you can make those comments freely, though.