I think Shadowbending makes sense, I just don't know if it's really something that works in of Avatar, since it's not tied to an element. And unlike spirit bending, which makes sense because the Avatar is tied to a spirit, shadows aren't that, and there's no connection to shadows with anything else.

Mary should definitely not take the number one spot, especially because I feel like we know her a little bit better than some of the others in the family. Mongul isn't that forgettable, mostly because it was in a good movie, Katana shouldn't be on here, an there are way more forgettable characters, like someone pointed out Bane, and I forgot he was in any DC movie before Christian Bale took up the mantle.