Ian Chesterton

Ian Chesterton was a science teacher at Coal Hill school. He and his colleague, Barbara Wright, became the Doctor's unwilling companions when they forced entry into the Tardis in search for one of their pupils, Susan Foreman. After many journeys, during which Ian was knighted by Richard the Lionheart (The Crusade), he and Barbara returned to the twentieth century in the Daleks time machine when the Daleks were defeated (The Chase) and their spaceship was left abandoned. They got back to Earth a few years later than they left, but they got back safely.

Ian Chesterton was in An Unearthly Child to The Chase: The Planet of Decision.