how to make a voice sound like a buzzing insect in audition

Hello- I am doing a tutorial that showed how you could make a voice sound like and "angry gerbil" or "dark lord" by using Pitch Shifter in the Effects Rack. I am wondering if there is a way to make a voice sound like an insect like a buzzing fly or mosquitoe? Any suggestions or help would be much appreciated. Thanks in advance for reading this and contemplating a possible answer. (-;