Randall Boggs is the main antagonist in the Monsters, Inc. franchise by Pixar. He is a purple and blue lizard-like monster with multiple limbs, known for his agility and ability to camouflage himself by changing color. Randall is an extremely skilled scarer, second only to Sulley in scare energy production, but he is also depicted as envious, selfish, and unscrupulous. He seeks to become the top scarer by using a device called the scream extractor to steal children's screams as energy, which leads to conflict with Sulley and Mike. Randall's character is explored in both the original Monsters, Inc. (2001) and its prequel Monsters University (2013), showing his evolution from a shy and insecure student to a ruthless competitor. He is a complex character, often isolated and struggling for validation, which fuels his antagonistic behavior. Randall also appears in related series such as Monsters & Co. la serie - Lavori in corso! where his story continues beyond the films. Overall, Randall is a cunning, intelligent monster with a unique ability to blend into his surroundings, making him a formidable adversary in the Monsters, Inc. world.