Renji Abarai (阿散井 恋次, Abarai Renji) is the lieutenant of the 6th Division under Captain Byakuya Kuchiki and is married to Rukia Kuchiki. He formerly served as the 6th Seat of the 11th Division under Kenpachi Zaraki.

Renji's tattoos during his time in the 11th Division. Renji has brown eyes and long crimson hair, which is usually kept in a high ponytail. As a child, Renji's hairline was leveled. Later, he styled it in a large widow's-peak. His upper body is covered in tribal tattoos, which have increased over time, starting from his early days as an academy student[2] to covering his entire back, much of his chest, his extremities, and even much of his forehead.[3]

Despite being of appropriate rank, Renji does not wear his Division's lieutenant badge. While out of uniform, Renji often wears a white kimono-like type of night clothing, with pink floral patterns on it, and a dark grey sash tied around his waist. It has also been said "that the women within his Division do not mind that he usually walks around in his night clothing."[5]

Renji is quite dynamic, as his personality varies from smug and cocky before a fight, to then disquieted and depressed after a major defeat, but shows himself to be an incredibly serious and determined fighter when confronted with an actual threat. Willing to fight, kill, and die for whatever he believes in, Renji is a dangerous man to those who stand in his way, especially in regards to how close he is with his fellow childhood friend, Rukia Kuchiki. Yasutora Sado compares his fighting style to that of Ichigo Kurosaki,[9] whom he initially antagonized but got along with quite closely since Aizen's betrayal (albeit frequently argues with).