Jack’s love interest, David. There is something about his complete disinterest in everything that ever goes on around him that is so wonderfully charming. He’s completely disconnected from the world, and then when he comes back to whatever’s happening, he’s always confused. At one point, Jack actually starts to make it snow inside of a classroom, and he doesn’t notice anything that happens until snow starts falling onto his homework.

Mei: Of course you and Jack would be good together. Don't you get it? She's tons of fun, and you're no fun at all. She completes you.

Jack: Do you think horses get songs stuck in their heads?

David: Oh my god, Jack. I don't know. Go to sleep.

*several years later*

Shen: Hey dad, do you think horses get songs stuck in their heads?