Joket, also known as Joketsu or Marshal Joketsu, is a high-ranking Dazaan Army officer. Initially a crisis emissary, she rose to commander of the invasion force. Following the death of her brother, officer Hido, she assumed his duties, reporting directly to the Great Leader of Dazaan. Her introduction signaled a strategic shift after predecessors like Gyranik and Gametsu failed.

Tall and imposing, Joket often towers over subordinates. Her distinctive attire includes a golden crown, a purple mask covering her upper face, a red-and-black leotard with wide shoulder pads featuring an angry face design, and Roman sandals. A purple choker necklace and purple wristbands complete her commanding presence.

Her personality is characterized by sadism, cruelty, and unwavering loyalty to Dazaan. She openly enjoys inflicting pain, frequently torturing prisoners with an electric whip while laughing at their suffering. She exhibits a commanding demeanor, demanding absolute obedience; subordinates address her formally and often kneel. Ambitious, she acts independently, disregarding authority figures like Gyranik when pursuing her objectives.

Tactically, Joket employs deception and psychological manipulation. In her first major operation, she established a hidden base in Green Fields forest, deploying mechanical beasts ("Bings") and a magnetic tornado trap to dismantle the Dai Apolon robot. She later kidnapped the young protagonist Goro, electrocuting and whipping him during interrogation for information on Dai Apolon. Her most elaborate scheme involved disguising herself as Queen Apolon, Dai Apolon's mother, to lure the hero into vulnerability; when the ruse failed, she ordered child protagonists to leap to their deaths.

Her relationship with Gyranik is contentious. She openly challenges his authority, executing missions without approval and concealing prisoners like Goro. After the destruction of a key base under Gyranik’s command, the Great Leader demoted him and promoted Joket to commander; she relished this, mocking Gyranik’s humiliation, underscoring her ruthless ascent.

Joket’s military campaigns escalated in aggression. She piloted the experimental Robot Behemoth Dazaan X without authorization, nearly incinerating a female protagonist, and later commanded the Mechanical Steel Beast Bullgander in direct assaults against Dai Apolon. Her tactics grew increasingly reckless, culminating in her personally leading troops against Dai Apolon on Planet Dazaan after earlier defeats.

Her narrative concludes during Planet Dazaan's final battle. After the Great Leader revived Dazaan despite Gyranik’s objections, Joket advocated for a more aggressive strategy against the invading Dai Apolon. Her ultimate fate remains unresolved in available sources, with her active role ceasing following the Dazaan Army’s defeat and the Great Leader’s demise.