The younger daughter of King Saul (I Sam 14:49). Hearing that she loved David (I Sam 18:20-21) and hoping to rid himself of his young and popular rival, Saul offered him Michal for a wife, for the brideprice of 100 Philistine foreskins. David managed the feat, leaving Saul no choice but to fulfill his promise. When the king later sent men to murder David at home, Michal helped her husband escape thus saving his life (I Sam 19:11-18).
While David was a fugitive from Saul, Michal was betrothed to Palti son of Laish from Galim (I Sam 25:44). Later, when David was crowned in Hebron, his first condition for ending hostilities with Abner and the survivors of Saul's family was the restoration of his wife; this was duly done (II Sam 3:12-16).
When David brought the ark to Jerusalem and danced in front of it, Michal haughtily accused him of immodesty and even indecent exposure (II Sam 6:16-22).
Michal never had any children (II Sam 6:23) and a seemingly conflicting account that she bore five sons to Adriel of Meholah (II Sam 21:8), is probably erroneous; it was her elder sister Merab who was Adriel's wife (I Sam 18:19) and the mother of his children.