Joab. Joab played an important role throughout David’s reign, serving as commander of David’s forces (8:16). Though an ardent supporter of David, Joab at times proved to be uncontrollable (3:39), acting in his own interests (3:26, 27) and even defying David’s orders (18:5, 9–14). Joab was executed by King Solomon (1 Kin. 2:28–35).
Abishai. Abishai served alongside Joab in David’s army (10:10; 18:2; 23:18).
Asahel. Also listed among David’s mighty men (23:24), Asahel’s relentless pursuit of Abner in this present episode will lead to a violent death (v. 23).