Shinji Hirako (平子 真子, Hirako Shinji?) is the former captain of the 5th Division, preceding his lieutenant Sōsuke Aizen. He distrusted Aizen from the day they met, and thus made him lieutenant so he could keep an eye on him. Because Shinji never socialized with Aizen, however, he was easily deceived by Aizen's actions, culminating to his conversion into a hollow. He has also grown an unknown relation with Ichigo: when asked by Captain Yamamoto which side he was, Shinji answered by saying he was on neither the Gotei 13 nor Aizen's side, but on Ichigo's.
Character is error.