Grandpa's faithful assistant in the Old Country, at Grandpa's castle, was Igor. In the 1980 Transylvania election, the people voted to do away with black magic, burn down Grandpa's castle and kill Igor. For some reason, all these years, Grandpa had left Igor to guard the castle. When Herman and Grandpa came to get a potion from Grandpa's old lab, Igor died. Grandpa used his life rejuvenating potion, and Igor came alive, younger, and "homelier than Marilyn!" The new, young Cousin Igor then went to help the angry townspeople burn the castle.

Resides in: Transylvania
Abilities: being Grandpa's assistant, calling Grandpa "Master"

Cousin Igor has been played by:
Howard Morris (The Munsters' Revenge 1981)