400 Years Ago Captain 2

‎400 years prior to Ichigo gaining Rukia's power, Baishin found a way to merge himself with his Zanpakutō, as a result he went on a rampage. He is responsible for the death of 63 seated officers of which some were lieutenants, and proceeded to escape to the real world. A total of six Captains were sent to capture him, two of them who lost their lives while the remainder were able to imprison him