Known as "Father" or "Papa," this patriarch leads a Vampiyan family exiled from Monster Land. Vampiyans sustain themselves on orange juice rather than blood. Their banishment resulted from Papa's chronic inability to effectively scare humans—a core societal requirement in their homeland. The sole condition for lifting their exile mandates that Papa successfully frighten 1,000 humans, a task forcing their relocation to the human world.

Papa tirelessly devises inventive contraptions to amplify his scare tactics and meet the quota. These inventions consistently malfunction or backfire, perpetuating his struggle to secure the family's return.

A significant complication arises when his daughter Sue forms a romantic attachment to a human boy named Kou during their exile. Her growing reluctance to leave the human world creates deep familial tension, directly opposing Papa's mission to complete the scare quota and lead the family back to Monster Land.

An 18-minute pilot film from 1999 depicted Papa within a similar narrative framework: exiled for scaring inadequacy, he must frighten 1,000 humans using inventive but ineffective methods. This iteration also introduced Sue’s attachment to a human boy as a core conflict. The pilot featured a visually distinct interpretation compared to the subsequent 26-episode television series.