Teacher

Teacher is a character in Spirit Tracks. He's Princess Zelda's teacher. He is first seen at Link's initiation ceremony for becoming a Royal Engineer, and is the one who takes Link and Alfonzo back to the castle after Cole attacked them. Though he scoffs at Link for suggesting that Zelda has been kidnapped, turned into a ghost, and that she is "actually right here next to you", he does worry that she has been gone "playing outside" for too long, and resolves to track her down. He is actually the only character in the castle who even believes that Zelda has left.

Eventually, Teacher dons a meager disguise and goes to the Hyrule Castle station to ask to be chauffeured to a random station. From then on, he will appear each day at a random station, and ask to be taken to another station. If successfully chauffeured, he will reward Link with a certain amount of Rupees, depending on how well Link drove the train.

"What to do, what to do...Oh, dear what a mess"  -Teacher

"I must find the princess! Oh, but where do I look?" -Teacher