Lieutenant Dirk is a Cerritos officer who hazes the newly promoted lieutenants, and is targeted with a game he fears in return.
Dirk is a lieutenant aboard the USS Cerritos. In In the Cradle of Vexilon, he tasks Mariner, Tendi and Rutherford with scanning thousands of computer chips to find a single broken one, which they suspect is a hazing ritual.
The three retaliate by planting a game of Chula, which traps players in a simulated world, in his quarters. When Dirk reveals that he was traumatized by Chula as a child, Mariner distracts him while Rutherford removes the game and Tendi finds the broken chip. Dirk and Ransom later celebrate the successful hazing.