Hulu, RocketJump, and Lionsgate Studios announced further casting for the upcoming Hulu series “Dimension 404” on Wednesday. Kenneth Choi, most recently seen on “American Crime Story: The People V. O.J. Simpson,” has been cast as the cunning drug dealer Kojima. Additionally, Cody Johns (“Summer Forever”) has signed on to play Roy “Killohertz” Torvald, a gamer who ceaselessly consumes a new, time-altering energy drink called “Impulse.” The six-episode sci-fi series, created by Freddie Wong, Matthew Arnold, and Dez Dolly will star Lea Michele (“Glee”) and Robert Buckley (“Lipstick Jungle”).