question: Who had an experiment go wrong?
context: The OSS now has a full child spy section, of which 13-year-old Carmen Cortez and 10-year-old Juni Cortez have become agents. Even though they were the first of the new Spy Kids Division, they are not considered the top spy kids, and soon they face particularly difficult competition from Gary and Gerti Giggles, the children of double-dealing agent Donnagon Giggles, whom Carmen and Juni helped to rescue in the previous film. It is shown that Carmen defends Gary, and has a crush on him, which strains her relationship with Juni.
  At a gala event, Donnagon somehow hacks into the teleprompter which the president was reading from, and is named director of the OSS. A fight ensues when a group of Magna Men arrive and render all adults unconscious. They are after the "Transmooker", a highly coveted device which can shut off all electronic devices. Juni recovers it, but drops it when Gary tries to take it from him. Gary then frames Juni for the loss, resulting in Juni being fired. In his new position as director, Donnagon can carry on with his plan to steal the Transmooker, so he can rule the world.
  The next morning Carmen hacks into the database and reinstates Juni as an agent. They take a mission meant for Gary and Gerti to recover the Transmooker. She and Juni use some hints from Alexander Minion, and follow the trail to a mysterious island where all electronics refuse to work. Gary and Gerti meanwhile are sent to the Gobi Desert and while trying to pinpoint their position manage to fall into a pit of feces. Shortly after arriving Carmen and Juni meet Romero, a lunatic scientist. Romero has been attempting to create genetically-miniaturized animals, so he can make a profit by selling the animals to kids in "miniature zoos." He had an experiment go wrong after accidentally pouring growth concoction onto the mutated set of animals. As a result, he is unwilling to leave his lab, out of fear of being eaten.
answers.text: Romero