Alter egos of Calvin

• Category:Airplane alter egos
• Allosaurus
• 
  Armadillo

• Bat
• Bat (alter ego)
• Category:Bath alter egos
• 
  Black-and-White Drawing of Calvin
• Blor-Utar

• 
  Calvin as a Doctor
• 
  Calvin as a Fighter Pilot
• 
  Calvin as a Helmeted Super Hero
• 
  Calvin as a Pirate
• 
  Calvin as an Astronaut
• 
  Calvin as Susie's Husband
• 
  Calvin in 2-D Form
• 
  Calvin in Black-and-White Form
• 
  Calvin in Chemically Induced Invisible Form
• 
  Calvin in Dog Form
• Calvin in Drawing Form
• 
  Calvin in Film Negative Form
• 
  Calvin in Fire Form
• 
  Calvin in Frankenstein Monster Form
• 
  Calvin in Inch-Tall Form
• 
  Calvin in Liquid Form
• 
  Calvin in Melted Form
• 
  Calvin in Mutant Fly Form
• 
  Calvin in Notebook Paper Form
• 
  Calvin in Plane Form
• 
  Calvin in Quarter-Inch Form
• 
  Calvin in Slinky Form
• 
  Calvin in Superhero Form
• 
  Calvin in Swollen Form
• 
  Calvin in Tiger Form
• 
  Calvin in Tiger Form (Transmogrifier alter ego)
• 
  Calvin in Twofold Insect-Sized Form
• 
  Calvin in Unexplained Giant Form
• 
  Calvin in Unexplained Invisible Form
• 
  Calvin in Werewolf Form
• 
  Calvin in Whaler Form
• 
  Calvin of the Future
• 
  Calvin the Airline Pilot
• 
  Calvin the Allosaur
• 
  Calvin the Ant
• 
  Calvin the Bold
• 
  Calvin the Bug
• 
  Calvin the C-Bomb
• 
  Calvin the Criminal
• 
  Calvin the Elephant
• 
  Calvin the Flea
• 
  Calvin the Giant
• 
  Calvin the God
• 
  Calvin the Human Insect
• 
  Calvin the Human Light Particle
• 
  Calvin the Human Satellite
• 
  Calvin the Hummingbird
• 
  Calvin the Lightning Bolt
• 
  Calvin the Reptile
• 
  Calvin the Zombie
• 
  Calvin with Life of Pizzazz
• 
  Calvin's Good Side
• 
  Calvin's Skeleton
• 
  Calvinosaurus
• 
  Captain Napalm (Alter ego)
• Category:Cardboard Box alter egos
• 
  Chameleon
• 
  Chicken (Transmogrifier Gun alter ego)
• 
  Color Drawing of Calvin
• 
  Crocodile

• 
  Dragon

• 
  Eagle
• 
  Elephant (Transmogrifier alter ego)

• First Husband
• 
  Flower (Transmogrifier Gun alter ego)
• 
  Frog
• 
  Frog (Transmogrifier alter ego)

• 
  Giant Amoeba
• 
  Giraffe
• 
  Godzilla

• Category:Invisible Alter egos

• Light Particle (Transmogrifier Gun alter ego)
• 
  Living X-Ray

• 
  Monster (Alter ego)
• 
  Mt. Calvin

• 
  Octopus
• 
  Owl

• 
  Planet Calvin
• Category:Pretend game alter egos
• 
  Pteranodon
• 
  Pterodactyl

• 
  Safari Al
• 
  Safe (Transmogrifier Gun alter ego)
• 
  School Alter Egos
• 
  Shark
• Category:Shrunken alter egos
• 
  Slug
• 
  Song Sparrow
• 
  Spaceman Spiff
• 
  Stupendous Man
• Category:Superhero alter egos
• 
  Superman

• 
  Tarzan
• 
  The giant fly
• 
  The Incredibly Annoying Human Echo
• 
  The World's Most Powerful Computer
• 
  Tornado
• 
  Tracer Bullet
• Category:Transmogrifier Gun Alter Egos
• 
  Tyrannosaurus Rex

• 
  Unnamed Pterosaur

• 
  Whale
• 
  Wonga-Taa

• 
  X-387 Robot Probe
• 
  X-387 robot probe