Asian Giant Hornets are responsible for up to 50 deaths a year in Asia, especially in Japan, which has been dealing with the problem for thousands of years. But it takes multiple stings to kill a person. But the real victim and biggest concern is the already declining honeybee population. Murder hornets were first spotted in Washington State in December, and beekeepers there are terrified. The Asian Giant Hornet is the biggest known hornet in the world. The hornet can grow up to 2 inches long with a curved stinger long enough to puncture a bee suit.