Karakaka emerges as the primary antagonist in the 1995 film *Crayon Shin-chan: Unkokusai no Yabō*. A time traveler from the future, he journeys to 16th-century Japan in 1570 with the objective of altering historical events to establish his own dominion over feudal Japan, driven by a desire for unchecked power. He wields formidable magical abilities, enabling him to command supernatural forces and control mechanical constructs. These powers facilitate his attacks on historical figures and his resistance against opposition. His actions create significant disruptions in the timeline, prompting intervention from the Time Patrol. A critical aspect of his scheme involves targeting the Kasukabe region and its ruling family. He eliminates the parents of the young samurai Fubuki-maru and captures Fubuki-maru's sister. This brutality solidifies his role as a tyrannical figure within the film's historical narrative. His confrontation with the Nohara family occurs when a stranded Time Patrol agent recruits them to correct the timeline. Karakaka clashes directly with the Noharas and Fubuki-maru, who are prophesied to defeat him. Their conflict culminates in a decisive battle where his mechanical creations and magical prowess are overcome. His defeat restores the natural course of history and prevents his planned usurpation.