Zakk Irius

Long blond hair with a parted fringe sits above a sharp black suit and a red tie.

The story gives him no real character work beyond his function. He operates as a disciplined courier for the Mafia, doing what Mello instructs and never straying from the handoff he was sent to manage.

When the Mafia names the Japanese notebook as its price for Sayu Yagami's release, the task force arranges to fly out of Tokyo toward Los Angeles on scattered flights. Irius intercepts Soichiro at the airport and phones Mello, who tells him to hurry and board Flight SE333, among the last seats the Mafia has lined up. Hideki Ide trails the pair to Gate 18 and watches them get on, while Shuichi Aizawa, already seated in 37-B, says nothing despite his alarm at seeing Soichiro. The two men settle into 44-G and 44-H under Aizawa's watch. In the air, Irius hands Soichiro an earpiece carrying Mello's terms for the exchange. Once the plane sets down in the desert and Soichiro disembarks, Irius stays aboard for the leg to Los Angeles. The Mafia repays his service by entering his name in Sidoh's Death Note as the flight arrives, and a heart attack kills him.

The anime alters the ending: there Aizawa tails him from the airport, the two board SE333 at 1:05 in the afternoon with no other officers present, and rather than dying at the Mafia's hand, Irius is later among the members Light condemns by writing their names in his own notebook.