Nothing is known about Tanaka's life prior to or as the outbreak began, except that he was an officer for the Atlanta Police Department.
Officer Tanaka, along with Officer Alvarado and two other patients, attempt to calm Percy, who is having a coughing fit, secretly a charade to act as a distraction for Beth to retrieve medicine from the drug cabinet.
Officer Tanaka stands with Officers Bello and Alvarado as they prepare to exchange Carol Peletier and Beth for Officers Amanda Shepherd and Licari off of Rick Grimes. He watches in surprise as Beth and Dawn are killed, but remains calm as Rick's group departs the hospital.
This list shows the victims Officer Tanaka has killed:
- Numerous counts of zombies