Dan, Laura, and David Bittering are the children of Harry Bittering and Cora Bittering. Out of all of Harry’s family members, they are the most in tune with the Martian environment and accept its changes most quickly. Perhaps because they are so young, they have the fewest ties to Earth. They adopt Martian language and names first, and are also the first to encourage their parents to move away from the Earth settlement and into the Martian villas. Like Cora, they encourage Harry to accept the changes that are occurring to them rather than resist them.