Lord Giri stands as the primary antagonist and ruler of darkness throughout the "Mahōjin Guru Guru" franchise, presenting a dire threat to the world. The central quest driving protagonists Nike and Kukuri is his defeat.

His role intensifies in the sequel "Doki Doki Densetsu Mahōjin Guru Guru," where he is explicitly titled the "evil King Giri," cementing his position as the malevolent monarch driving the plot. To counter him, Kukuri must locate and recruit monsters from each territory, while Nike seeks recognition from the Four Kings of Nature to obtain the elemental swords—Wind, Water, Earth, and Fire—essential for their confrontation.