The figure of monsters and the monsters themselves, such as Grendel and Grendel’s mother, have been conveyed through oral tradition or manuscripts, reflecting their historical significance in today’s society. This paper examines the representations of Grendel and Grendel’s mother within the broader framework of the Beowulf narrative and its modern interpretations, at the intersection of psychoanalytic, exclusion, and cultural critical approaches. It is argued that Grendel’s mother is a figure positioned outside the symbolic order but serving an essential part in the establishment of heroism and cultural identity. Beyond that, the study also asserts that by reconciling Grendel’s stigmatization with original sin stemming from ancestral corruption rather than personal guilt, the text renders visible medieval anxieties with regard to lineage, destruction, and moral determinism, with their impacts that endure in families and communities of contemporary society. These themes are addressed alongside contemporary psychological readings that juxtapose Grendel’s position of exclusion with the hardship of immigrants; in particular, the socio-emotional consequences associated with Xenophobia and exclusion due to differences. In conclusion, the lasting effect of Grendel’s narrative on modern concerns regarding marginalization with the fragility of identity sheds light on these dynamics in the construction of reflective attitudes of Grendel on modern perception.