They appear in all Japanese based missions. In all missions, they face the Akunin.

In Hankagai, they are ordered to protect Mr. Yoshida. They only assist the player by briefing and supporting during the beginning of the mission and by radio near the end of the mission.

In Fastline they brief the player during the introduction, and assist him during most of the mission. They are not seen in the final combat scene.

In Truth in Chaos, they brief the player in the introduction. While the player is in charge of finding the location of the VX Gas and rescuing hostages, they fight the Akunin members in the courtyard.

In Run!, they only assist the player via radio communication. At mid-point, they attempt to evacuate the player by sending him a chopper but unfortunately, it is shot down by the Akunin and crashes. They finally send a truck to extract the player.