[Other] Grendel is one of the antagonists in the epic poem Beowulf. We can infer from the (sparse) descriptions that it was a large, savage, hulking brute with a massive amount strength. The term "grendel" is also used as a synonym for "demon" or a demonic creature.
GRENDEL
Meaning of GRENDEL in English
Encyclopedia Mythica English dictionary. Английский энциклопедический словарь греческой мифологии. 2012