There is currently no captain assigned to the 3rd Division.However Rojuro retained his postion after Aizen's defeat.
Izuru Kira is the current lieutenant for the 3rd Division. He was in charge of the 3rd Division between the time of Gin's departure and Shūsuke's appointment as captain. He is friends with Renji Abarai from when they were in the Soal Reaper School.
Unseated and Officers of Unknown Rank
Inose is one of the three featured officers that appeared during the Shūsuke Amagai arc.
Aida is one of the three featured officers that appeared during the Shūsuke Amagai arc.
Kanō is one of the three featured officers that appeared during the Shūsuke Amagai arc.
Shita Seko is an unseated member of the 3rd Division who appears during the Shūsuke Amagai arc.
Rojuro "Rose" Otoribashi was the captain of the 3rd Division prior to his becoming a vizard 100 years before the main storyline.
Gin Ichimaru was the captain of the 3rd Division prior to his defecting.
Shūsuke Amagai was the captain of the 3rd Division during the Amagai Arc (anime only). He was assigned to a patrol unit prior to his promotion. He turned out to be the mastermind of the events of the arc, and later took his own life to atone for his misdeeds.
Former 3rd Seat
Makoto Kidune served as the 3rd seat of the 3rd Division (anime only). He was brought in by the Captain Amagai. He revealed himself to be a traitor and died in a fight with Izura Kira.
The insignia for the Third Division of the Gotei 13 is the marigold, which Izuru explains represents "despair."
In the anime, when Shūsuke Amagai took over, they had to do menial labor in order to regain the other divisions' trust.
In the Bleach Bootleg, a section was included with questions and answers from the captains and vice-captains of each division as part of the Gotei 13 Recruitment Fair. The following was the 3rd Division entry for the Recruitment Fair.
1. What kind of individuals are you seeking?
People who don't lie.
2. How would you describe the atmosphere around your division?
I wonder. Lately I've been alone a lot, so....
3. What do you require of new recruits?
That they not lie.
4. Some words for the shinigami recruits.
Even if you come, Captain Ichimaru won't be here.
Frank talk!! with the 6th Division lieutenant, Renji Abarai
Since that incident, Kira's seemed pretty down. Well, it's pretty hopeless... Hey, any of you guys who'd think, "Anything's fine! I just want to be helpful to Lieutenant Kira!" -- join here!! Good luck, Kira!!!