No doubt in the Disney version, Beowulf and the feisty, coed-army warrior-princess who inevitably will be written into the script as his partner will befriend a misunderstood Grendel and Grendel's mom (it's not easy being green).
271942
Disney will no doubt depict Beowulf befriending Grendel.
271943
There is no suggestion that Disney will turn its attention to Beowulf.