TV-Series
Description
Dr. Deko, the eccentric inventor of Yamakawa Village, created Robby and numerous other robots. He designed Robby as a mischievous yet kind-hearted robot featuring unconventional elements like a television set in his stomach. His inventions extend to animal-themed machines, including a robot police dog for the village policewoman Sachiko, showcasing his technical ingenuity despite an unkempt appearance and lecherous tendencies.

His personality merges intellectual brilliance with significant flaws, marked by a persistent inappropriate fixation on Sachiko. This fixation manifests in actions like covertly taking nude photographs of her without consent—leading to his arrest on one occasion—and frequent browsing of pornographic material, cementing his "Dirty Old Man" archetype. Despite these traits, he demonstrates genuine community concern by lending inventions to assist villagers, embodying a "Jerk with a Heart of Gold." His willingness to help fosters friendships, contrasting his abrasive and sarcastic demeanor.

Dr. Deko routinely faces comedic misfortunes as karmic retribution. These include enduring physical slapstick, being taken hostage by villains, subjected to blackmail, or experiencing humiliations like imprisonment alongside literal pigs. Such consequences typically arise directly from his own actions, particularly his harassment of Sachiko or verbal abuse toward Robby.

Highbrow, a sophisticated and evil inventor, serves as Dr. Deko's recurring antagonist and foil. While both are inventors, Dr. Deko's unkempt appearance, morally questionable tendencies, and community ties starkly contrast Highbrow's cultured demeanor, solitary existence, and malicious ambitions. Highbrow's schemes frequently threaten village peace, pitting him against Dr. Deko and Robby.

The character exhibits minimal significant development or altered backstory across adaptations. In the English-dubbed version, his overtly perverted tendencies and extreme consequences were largely removed or downplayed for content standards, softening his portrayal compared to the original Japanese iteration. No concrete information exists regarding substantial character evolution, extended background, or distinct portrayals in other official media beyond the core 39-episode series and its compiled English-dubbed movie adaptation. His role and characteristics remain consistent throughout the series.