Was kankuro supposed to be a cat and would he kill you if called him Kitty Kat Man?

Kankuro from Naruto is not a cat, and there is no evidence that he would kill anyone for being called "Kitty Kat Man".

The idea of Kankuro being a cat or having a cat-like personality is purely fan-made and doesn't exist in the canon of the Naruto universe.

While Kankuro can be a bit grumpy and has a dry sense of humor, he's not known to be particularly sensitive about his appearance or nickname.

It's important to remember that fictional characters are not real people and don't have real-world feelings.