Hagar the Horrible struggles to balance his career as a marauding Viking with the mundane demands of domestic life. As a Viking chieftain, Hagar attempts to lead his crew on raids and pillaging expeditions, only to be thwarted by his own incompetence, his crew's laziness, or the sharp tongue of his wife, Helga. The narrative framework consists of a series of self-contained, single-panel or short-strip gags that highlight the absurdity of Viking life. Hagar must navigate the logical constraints of a world where historical accuracy is secondary to comedic timing and domestic conflict.

Readers frequently highlight the enduring appeal of Dik Browne's character designs and his ability to distill complex domestic frustrations into simple, humorous panels. Discussion often centers on how the strip manages to maintain a lighthearted tone while poking fun at the violent reputation of Vikings. Critics often point to the balance between Hagar's professional failures as a raider and his role as a husband and father as the primary source of the strip's longevity. Many fans appreciate the nostalgic quality of the artwork and the consistent pacing of the jokes across the collection. The work is widely regarded as a staple of the newspaper comic medium that successfully bridges the gap between historical parody and relatable family comedy.