The series takes its comedy from a combination of wordplay.physical humor, situational irony, breaking of the fourth wall, and numerous pop culture references (especially to Gundam, Kamen Rider, Super Sentai, Dragon Ball, and many others, although when broadcast and published in the United States, they make references that American audiences would be familiar with like Ghostbusters and Men in Black). Both the manga and the anime are laden with pop-culture references, and even in the same story the references often vary wildly.