Mistress 9 is the Sovereign of Silence, wife of Bowser, and mother of Bowser Jr. Like her husband and son, she debuted in a cameo in Kids World's Adventures of Star Wars Episode II: Attack of the Clones. Then debuted in Ryan Mithcell & The Gang vs. Hook. She returned in Kids World's Adventures of Star Wars Episode III: Revenge of the Sith as sepratist spared by Darth Vader. She and her family returned in Kids World's Adventures of Star Wars Episode VI: Return of the Jedi, where they and Team Rocket were teaing up with Vader and the Emperor, but were then defeated and trapped in Mewtwo's ghost trap. Then she and her family returned in Kids World's Adventures of Scooby-Doo and the Witch's Ghost. One time, she and her family became good guys in Kids Word's Adventures of Cool Runnings, in which they help Ryan, Pooh and co. compete in the Winter Olymipics with Dr. Eggman and Metal Sonic, but they then left early during the celebrations. Mistress Nine and her family came back in Ryan Mitchell & The Gang Goes to FernGully: The Last Rainforest, along with her son's girlfriend, Ranamon, when they teamed up Hexxus to destroy FernGully and the heroes, but were then blown away by Calmaramon's out-of-controlled Titanic Tempest attack. The four returned in Ryan Mitchell & The Gang Meets Inspector Gadget and teamed up with Dr. Claw, but they were soon defeated and they escaped through a warp hole, leaving Claw to go to jail. She appears throughout most of Bowser's Kids World Movies as the 2nd in command of the koopas, also helping such villains as Plankton, Poison Ivy, Mr. Freeze, and even Biollante, In Kids World's Adventures of Super Mario Sunshine, Mistress Nine, Plots To Kidnap Princess Peach For Bowser, But Now That Their Old Nemesis from The Past Sailor Moon And The Sailor Scouts Had Returned To Help Our Heroes, And Retieve Sailor Mini Moon's True Pure Heart Crystal from Their Clutches.