Question: I've noticed this in other Anime, but I see it a lot in Naruto; quite frequently the characters run with their arms straight behind their backs. Is there any reason for this? I spent a little time in Japan but I never saw anyone run this way.
Question: At the end we learned that Laurel murdered her husband but how did she not remember that if she was the killer all along?
Question: Where did Kim get all of these gadgets?
Answer: From technogenius Wade. There's at least one scene in the show where she gets some new gadgets from him.
Answer: That is just a style used by some animators. It is easier to keep the arms in one position than to draw them in motion. And it makes it look funnier.
papajim