Beowulf's father Ecgtheow was a good friend of Hrothgar's. Long ago, Hrothergar saved Ecgtheow's life. Beowulf comes to repay his father's "debt" to Hrothgar. This is the 'technical' reason he helps Hrothgar. Really though, Beowulf is a true hero. He seeks out a challenge, and Grendel is the ultimate challenge.
King Hrothgar called upon Beowulf's help to rid Heorot Hall of the evil Grendel in the epic poem Beowulf.
King Hrothgar called upon Beowulf to help him defeat the monster Grendel, who was terrorizing his kingdom of the Danes. Hrothgar had heard of Beowulf's legendary strength and bravery and believed he was the only one capable of defeating Grendel.
Hrothgar is the king of the Danes in the epic poem Beowulf, not Hogarth. He is a key character who seeks the help of Beowulf to defeat the monster Grendel. Hrothgar is known for his wisdom and generosity.
Beowulf goes to Denmark to help Hrothgar because Hrothgar, King of the Danes/scyldings, helped Beowulf's father defeat some enemy. So he kind of owes Hrothgar for saving his poeple, plus he wants glory.
'Beowulf' is the epic story that tells us the tale of hero Beowulf, the strongest and bravest of them all and how he defeats monsters and becomes a king. Among several characters we will also meet Hygelac, his uncle and king of the Geats, the one who opens his kingdom's doors and his heart to Beowulf.
To help Hrothgar by destroying a monster.
Beowulf and his men were ordered to leave their weapons and armor outside when they entered the mead hall of King Hrothgar in the epic poem Beowulf.
The Mighty Prince Mourning in Beowulf is King Hrothgar. He is the ruler of the Danes, whose kingdom is plagued by the monster Grendel until Beowulf arrives to help. Hrothgar represents the pride and honor of a noble king.
Higloc, king of the Geats and Beowulf's uncle.
Beowulf had no help he slaughtered Grendel on his own in the fen.
Beowulf's father took refuge in Hrothgar's land after a messy murder back at home. He eventually married Hrothgar's daughter, and then came baby Beowulf. So long story short Hrothgar is Beowulf's grandfather.
King Hrothgar can be found in Heorot, his grand mead hall. Upon hearing of Beowulf's arrival, he welcomes him warmly and expresses gratitude for his willingness to help rid the kingdom of Grendel's terror.