Mr. Ducky is Comic Book Guy's rubber duck toy.
Appearances[]
Episode – "Three Men and a Comic Book" 
Episode – "Bart Has Two Mommies" (cameo)- Episode – "Labor Pains"
- Episode – "The Nightmare After Krustmas" (with orange duck)
- Episode – "The Dad-Feelings Limited"
- – The Simpsons Movie
Video game – The Simpsons Game