Old Man
Appeared in episode 20 (“The Afternoon Piano”) of Tsubasa Reservoir Chronicle in season 1 as the old shopkeeper that sold Kurogane and Syaoran their swords. He also appears in episodes 12 and 13 (“Dangerous Road” and “Parting of Beginnings”) of season 2 as the old man riding the bus. He does not have a name and is usually referred to as the “Old Man” by the other characters.