One-Eyed Baku commands the Big Jaws as their alpha, a hardened Tyrannosaurus rex whose missing eye and fierce reputation cement his authority over both his pack and the contested territories they rule. His leadership demands unwavering adherence to hierarchy, clashing decisively with rivals who threaten the pack’s dominance. Once a defender of the land, Baku secured his status by repelling invasions like the gluttonous long necks from the south, forging his legacy as a respected yet feared guardian.

A pivotal revelation unveils Baku as the biological father of Heart, the protagonist, whose egg was lost to circumstance before hatching. Their climactic battle ends with Baku sparing his son, recognizing their shared bloodline and offering silent gratitude to Heart’s adoptive mother for nurturing the offspring he could not. Though a merciless enforcer of pack law, Baku operates under an unspoken code of honor, permitting Heart and Umasou to depart alive after testing their resolve—a choice balancing respect for resilience with the harsh necessity of exile to preserve order.

Baku’s decisions stem from pragmatism, not cruelty, as he prioritizes the herd’s survival over latent paternal ties. His interactions with Heart simmer with tension between the rigid expectations of leadership and the pull of kinship, though he masks vulnerability beneath disciplined resolve. The narrative closes on their uneasy truce, marked by grudging acknowledgment of Heart’s independence. Baku’s dual role as bloodline patriarch and ideological rival underscores the story’s core struggle—where lineage collides with self-made identity in the fight to belong.