Hide appears in several episodes, but does not speak.
Hide appears in "The Deposition". He's in the background during Pam and Kelly's ping pong match.
In his first speaking role, we find that he speaks English poorly. He explains that he was a surgeon in Japan. One day while performing surgery on a Yakuza mob boss, the man died. As a result of this, he fled the country and went to America to start a new life. He credits Darryl for saving his life, and shares a secret with the documentary crew: He actually killed the boss of the Yakuza on purpose. ("Happy Hour")
Dwight recruits Hide to apply for the "Print in All Colors" executive training program because he wants to undermine Kelly's application. Hide begins the interview by describing his former career as a surgeon, and doesn't end up qualifying for the program.
Hide quits after he and the other warehouse workers won the lottery ("Lotto"). Darryl later mentions that he is using his money to invest in an energy drink for Asian homosexuals. Later, he and Glenn return after blowing all their money on investing in the energy drink. Darryl hires both of them back ("Free Family Portrait Studio").
Energy Drink Company
Hidetoshi created an energy drink for 'Asian homosexuals' after he quit Dunder Mifflin. The energy drink was 'penis flavored' but was later changed to 'coconut penis.' After his company tanked he rejoined the Dunder Mifflin workforce. Robert California was shown to greatly enjoy the drink and he mentioned that the drink tasted much better before the coconut flavoring was added. Darryl Philbin tried the energy drink and remarked that he did not enjoy the experience.