If I’ve learned anything as a Christmas-movie historian, it’s that it’s very easy to get Santa Claus origin stories wrong. Lean too hard into the explanations, and you strip away the wonder. Focus too ...

He’s costumed, he soars, he rescues kids from joylessness, and now like any other superhero he’s got an origin story, thanks to the animated film “Klaus,” a serviceably sprightly mix of attitude and ...