Masahiko Kida

His black hair is kept short, and he is typically seen in a dark suit, his eyes hidden behind tinted lenses.

Serving as one of Yotsuba's vice presidents, charged with rights and planning, he is described as composed and shrewd, though prone to faltering whenever something catches him off guard. He earned a psychology degree from the science faculty of To-Oh University before joining the company in 1994. Away from the office he collects eyeglasses, has no use for contact lenses, and was raised by two parents who both taught biology.

Hoping to identify their elusive opponent, Kida engages the detective-for-hire Eraldo Coil to dig up L's name and face, a move that immediately alerts L to Yotsuba's existence. L counters by sending his operative Aiber to pose as Coil; Aiber rattles Kida by demanding a steep fee upfront and hinting that refusal would cost them anyway, pressure that convinces the group to retain him. Kida later invites the false Coil to interview Misa Amane, who is under suspicion as the second Kira and a possible route to L's identity.

When the team weighs which of them might be the Yotsuba killer, Shingo Mido clears Kida, reasoning that he was the one who supplied the funds that brought Coil in. Some five months on from L's death, Light wipes out the surviving Yotsuba executives, and Kida succumbs to a heart attack. The television drama spares him, allowing him and his colleagues to live through the story.