"Cereal Criminals" is the fifteenth episode of the first season of Penn Zero: Part-Time Hero. It premiered on March 23, 2015.


In a world where everyone is a cereal mascot and cereal is grown on farms, Penn seeks the help of an imprisoned Rippen to catch the Milkman, a villain threatening to flood all the cereal crops with milk, turning them soggy.


  • Paul Reubens (Pee-wee's Playhouse and Tron: Uprising) guest stars as The Milk Man.
  • This is the first episode in which Rippen isn't the main villain, as the Milkman is instead.
  • The brief appearance of "Lenny the Lion" is likely a reference to Linus the Lion-Hearted, a 1959 cartoon created to advertise various Post cereals such as Alpha-Bits, Crispy Critters, Post Toasties, Rice Crinkles, and Sugar Crisp; Linus himself was voiced by well-known character actor, Sheldon Leonard. (Get it?) In addition, the Alpha-Bits mascot, a friendly, Southern-accented Postman, Lovable Truly, is very similar in depiction to The Milk Man in this episode.
  • This episode reveals Rippen and Larry's jobs as an art teacher and school principal respectively.
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Penn ZeroSashi KobayashiBoone WisemanPhyllisBrock ZeroVonnie ZeroAunt Rose and Uncle ChuckRippenPrincipal LarryPhilMayor Pink PandaDr. HissyPrincess Alrgelbaccch BlunkenthorttthhhphCaptain Super CaptainProfessor Evil ProfessorEight BallSheriff Scaley BriggsBlazeGeneral TalonSoda JerkAmber BriggsLady StarblasterOrchidNugThe MilkmanCoach JackieCoach WallaceMr. SnowmanPirate MariaGeneral Bighorn • The Hooded Pixie • Sonny Sonnerstein
Penn Zero: Part-Time Hero (Opening Theme)We're Breaking Out of Here for ChristmasTime to Kill • We Can Catch the Milkman • What is a Princess? • Pigoilet • Victory is Mine at Last • The Truth of It Is • Moonlight Bright • This is a Real Song • Boone Reads On • Race to the Top • Race to the Top (reprise) • You're a Karaoke King • High in the Sky • Breath In, Breath Out • Bad Weed • Today is the Day • My Name is Penn Zero • Save the Worlds
Season One: "North Pole Down" • "Chicken or Fish? / The Old Old West" • "Babypocalypse / That Purple Girl" • "I'm Super! / The Fast and the Floor Rugs" • "Brainzburgerz" / "Chuckle City" • "Flurgle Burgle / Temple of the Porcelain God" • "Defending the Earth/Number One, Number Two" • "3 Big Problems / Cereal Criminals" • "I'm Still Super! / Balls!" • "The Princess Most Fair / Hail Larry" • "It's a Colorful Life / Larry Manor" • "Lady Starblaster / Amber" • "Totally into Your Body / Fish and Chips" • "The Ripple Effect" • "Where Dragons Dare / Rip-Penn" • "Chuckle City 500 / Rock and Roll" • "Plantywood: City of Flora / Boone's Apprentice" • "The QPC / Shirley B. Awesome" • "Massive Morphy Merge Mechs / Ultrahyperball" • "Zap One" • "Save the Worlds"

Season Two: "The Pirates, the Parrot, the Puzzles and the Talking Boats" • "Alpha, Bravo, Unicorn / A Game of Cat and Mouse" • "Wings of Destiny / Sensitivity Training" • "The Bewildering Bout of the Outstanding Automatons / Back to the Past of Future Balls" • "A Tale of Two Wizards / Rockullan, Papyron, Scissorian" • "Be My Ghost / The Chinchilla" • "The Kobayshis / Cereal Fugitives" • "The Last Mountain Beast"

Middleburg • Middleburg Central High • The Odyssey • Fish Stick on a Stick • Knight World • North Pole • Superhero World • Arabian World • Plush Toy World • Clown World • Dinosaur Cowboy World • Cereal World • Old English World • Giant Monster World • Zombie World • Space World • Ocean World • Color World • Musical Fairy Tale World • Caveman Spy World • Future Barbarian World • Ultrahyperball World • Demon World • Alien World • Galaxy World • Temple World • Dragon World • Gothic Mystery World • Plant World • Animal Barbarian World • Toy World • Outer Space Court World • Robot World • Pirate World • Fairymania World • Steampunk World • Ball World • Ghost World • Rock, Paper, Scissor World • Nothingness • Most Dangerous World ImaginableLeast Dangerous World Imaginable
Multi-Universe Hologram Uplink • Multi-Universe Transprojector • Pigoilet • The QPC Unit • Vortex Tops • Specs