Hello Kitty is not a cute inoccent character. Kitty means devil and hello stays the same. This character was created by a mother who had a daughter with mouth cancer thats why Hello Kitty doesnt have a mouth. Her mother made a deal with the devil to try to help her find her daughter. Then she started doing the dolls. The name may seem like there is nothing wrong with it but now you know what it means.
Hello Kitty has no real specific meaning in Chinese or Japanese, other than what it actually implies "Hello Kitty". Although there was a misinformed rumor that it could mean devil in Chinese. As of this posting there is no validity to Hello Kitty meaning devil in Chinese.