Blor-Utar is an alien that Calvin made up and impersonated for Show and Tell. He only appeared in one regular strip. He claims to come to Earth from the planet Zimtok-5 to subjugate mankind. His interest in the human race is not only slave labor, but also food; he says that humans are "delicious and nutritious". He came to Calvin's school to demonstrate his species' weaponry and dissuade revolt. Although Calvin makes up an alien language, Blor-Utar is "dubbed" in the strip, so that we may understand his speech. But the speech is incomprehensible to everyone in the class: Miss Wormwood speaks up to end Calvin's gibberish, while an unseen student suggests that he be in a special school.

Community content is available under CC-BY-SA unless otherwise noted.