Igor (Young Frankenstein)
Background
Igor, pronounced "eye-gor" is the laboratory assistant for Dr. Frankenstein. His grandfather used to work for Dr. Frankenstein's grandfather.
During the events of Young Frankenstein (1974) played by Marty Feldman
The train arrives in Transylvania, and Dr. Frankenstein gets off and is greeted by Igor. They debate over the pronunciation of the name Frankenstein and also Igor. After Dr. Frankenstein awkwardly comments on Igor's hump, Dr. Frankenstein meets Inga and they head to the castle. They arrive at the door and are greeted by Frau Blucher and Dr. Frankenstein and Inga are taken to their rooms. Dr. Frankenstein and Inga find a passageway and follow it to a laboratory and find Igor there and at the far end the original Dr. Frankenstein's laboratory. They open a door and find Frankenstein's notes. The next morning they discuss his notes and note that any experiment would result in increased sizes of all body parts of those experimented on. Dr. Frankenstein follows a pair of Gravediggers with Igor and then he steals the body. As they are transporting it they are stopped by Constable Henry, who lets them go. They go to the brain depository and as Igor is stealing the brain of Hans Delbruck, a scientist and saint, lightening strikes and he drops it. He then takes an abnormal brain. They put the body on a table and use electricity to bring The Monster to life, but fail. At dinner, Dr. Frankenstein is still upset about the failure of his experiment. The Monster comes to life and Dr. Frankenstein sets it free from the operating table. Igor lights a cigarette, which causes The Monster to go into a rage and he starts to strangle Dr. Frankenstein. Inga gives The Monster a sedative and Dr. Frankenstein asks Igor about the brain in The Monster. Igor tells him he took the brain of someone named Abby Normal. Inspector Kemp arrives at the castle and tells Dr. Frankenstein about the villagers fear of a monster. Inspector Kemp leaves after getting an assurance from Dr. Frankenstein that there is no monster. Frau Blucher finds The Monster and sets him free. Dr. Frankenstein realizes it was Frau Blucher who led them into the laboratory. The Monster breaks out of the castle and runs away. Dr. Frankenstein disguises himself and is able to catch The Monster by attracting him by playing the violin. Dr. Frankenstein decides he is going to tell The Monster he loves him and tells Inga, Igor and Frau Blucher not to open the door to The Monster's cell no matter what. Dr. Frankenstein tells The Monster he is good, not evil and he loves him. After The Monster escapes from jail, Dr. Frankenstein plays the violin from the castle to try and attract The Monster, who arrives at the castle and Dr. Frankenstein transfers a portion of his brain to The Monster. Inspector Kemp and the villagers arrive at the castle and break inside and Villager starts to break the lab equipment. The villagers grab Dr. Frankenstein and The Monster, who can now speak, tells them to put Dr. Frankenstein down. The Monster tells Inspector Kemp that since he couldn't instill love into people, that he would instill fear into them. He then tells the villagers of the sacrifice Dr. Frankenstein made and Inspector Kemp offers The Monster his friendship.