First appearing in The Second Show Ever, he is the "custodian of the cosmos, caretaker of the constellations, sweeper of the corridors of time" destroying "impurities" in the universe. His next target was earth before Sam and Max intercepted. Their use of a "lagomorphic mind-meld" in order to teach Lactose all of humanity's advances and inventions in a short duration, gave him more of a reason to destroy earth since he was disgusted by what he saw. He returns in The Final Episode as a guard to keep an eye on Sam and Max. He didn't have much to say other than the comical phrase "I see you".