Mr. Tanaka is calm, quiet and dedicated to his work. He similarly treats each member of the main Thorndyke family with great respect; in the case of Chris and Nelson, he refers to each of them as "Master". He cares very much for the well-being of Chris and his family, and will do anything to protect them, even if it means sacrificing his life. Sometimes, however, he can be a bit overzealous and nervous when things do not go as planned; whenever he feels that he has let the Throndykes down, he assumes he has shamed himself and does not deserve his job.