Was Hello Kitty spawned from a pact with the devil? Today's best urban legend:
[A] child... had cancer. The parent made a pact with the devil that if the child was cured they would create a character in the devil's honor that would be adored worldwide. There are different variations but they all boil down to the point that Hello Kitty is evil...
You knew it would have been something like this, didn't you?
The Snopes debunking - clearly a defensive measure against the Mouthless One's minions - has more goodness.
[W]e're wholly unaware of any Chinese language (there are many) wherein "kitty" means "demon."...
(image noted here)
Sanrio spokesman Kazuhide Yoneyama said in 1999, "Without the mouth, it is easier for the person looking at Hello Kitty to project their feelings on to the character. The person can be happy or sad together with Hello Kitty."