Hrothgars leadership can be described as

Hrothgar enjoys military success and prosperity until Grendel terrorizes his realm. A wise and aged ruler, Hrothgar represents a different kind of leadership from that exhibited by the youthful warrior Beowulf. He is a father figure to Beowulf and a model for the kind of king that Beowulf becomes. Hrothgar is an excellent and successful king. He builds Heorot, a magnificent hall, and builds love and loyalty through his generosity and wisdom. However, though once a great warrior, he can no longer defend his people from Grendel, and his sons also are too young to take up leadership of the Danes. In the epic poem Beowulf, Hrothgar is mentioned as the builder of the great hall Heorot, and ruler of Denmark when the Geatish hero Beowulf arrives to defeat the monster Grendel. Hope this helps!