Igor is the traditional stock character or cliché hunch-backed assistant or butler to many types of villain, such as Count Dracula or a mad scientist such as Dr. Frankenstein, familiar from many horror movies and horror movie parodies. Frankenstein has neither a lab assistant nor any association with a character named Igor in the original Mary Shelley novel, but a servant named Fritz is introduced in the 1823 play ''Presumption; or, The Fate of Frankenstein'', apparently to allow Frankenstein to speak aloud to someone for the audience’s benefit. In the novel ''Dracula'', the count is assisted by Renfield. Interestingly, in 1931, actor Dwight Frye portrayed both Fritz in ''Frankenstein'' and Renfield in ''Dracula''.

An early representation of Igor in film is the uncredited, hunch-backed dwarf laboratory assistant to mad scientist/alchemist Rotwang in the 1927 film Metropolis. In the 1933 horror classic Mystery of the Wax Museum "Ivan Igor" is the name of the mad wax museum curator.

The Igor of popular parlance is a composite character, based on characters created for the Universal Studios film franchise. In the first Frankenstein film (1931), Fritz served the role; in subsequent sequels, a different physically deformed character, Ygor, is featured, though Ygor is not an assistant in those films.

* Jesse James Meets Frankenstein's Daughter (1966): Hank Tracy, a dimwitted brute and henchman to Jesse James, is seriously wounded during a stagecoach robbery and taken to house of Maria Frankenstein, granddaughter of Victor Frankenstein Maria operates on Hank, replacing his brain with an artificial one and reviving him as a violent monster she calls Igor.

* Cat-Man Comics #1 -2 : In issue 1, Black Widow deals with the Hag and her son Igor. In issue 2, Lance Rand comes into conflict with Dr. Igor, a bald, bespectacled scientist with facial hair who makes people into giants in his laboratory.
* Detective Eye #1 : Baron Blood, enemy of Dean Denton, has an assistant named Igor.
* Blue Bolt v1 #12 : The crew of the Phantom Sub assist the FBI in tracking down Igor and his fellow spy.
* Ding Dong #4 : Nightmare Noonan after using his dad's knight shaped cigar lighter and dreams of Knights of old. He encounters a fire breathing knight named Sir Lighter assisted by Igor.
* Planet Comics #41, 70 : Huldane the Pirate Queen has Igor assist her in creating plant women into slave labor for the asteroid mines. They are stopped by Flint Baker & Reef Ryan.
* Mystery Men Comics #30 : Lynx and Blackie the Mystery Boy stop an evil hypnotist name Igor who was using his victims to rob banks.
* Four Favorties #13 : Madame Death had an assistant named Igor who fought against Lash Lightning and Lighting Girl.
* Psycho #3: Victor Frankenstein's hunchback assistant Egor helps the Monster bring the doctor back to life using the same process that created it.
* Black Cat Mystery #39: Dr. Payn is a hunchbacked scientist like Igor, whose connection to Frankenstein remains ambiguous—perhaps a renegade disciple, perhaps merely an obsessed imitator. His goal? To create the perfect bride, stitched together from the most beautiful parts of murdered women. Rejected by the world for his deformity, he attempts to force love into existence through his monstrous creation... until his own obsession consumes him completely.

* Reese's Peanut Butter Cups Candy: Frankenstein (1986)
* Boris Karloff - A-1 Steak Sauce (1968)

*In the United States, courts have determined that copyright protection cannot be extended to the characteristics of stock characters in a story, whether it be a book, play, or film. For more explanation see [https://en.wikipedia.org/wiki/Nichols_v._Universal_Pictures_Corp. Nichols v. Universal Pictures Corporation]. This may explain why the name "Igor" has been freely used in various other productions. In Psycho #3, the character’s name may have been altered to "Egor" out of caution, possibly to avoid any potential legal dispute.
*[https://youtu.be/OsAGwYefU7I?si=sSOAi6Xtkhl70ZBk The Reese's commercial is public domain because those were published in the United States between 1978 and March 1, 1989 without a copyright notice, and] [https://publicrecords.copyright.gov/search?page_number=1&query=%22Reese’s%20Peanut%20Butter%20Cups%20%22&field_type=%22keyword%22&records_per_page=10&type_of_record=%22registration%22&sort_field=%22representative_date%22&sort_order=%22asc%22&type_of_work=%22motion_picture%22&model=%22%22 its copyright was not subsequently registered with the U.S. Copyright Office within 5 years].
*[https://youtu.be/BlJK0Y_LhIQ?si=mzWRtCJtzzqxfjvu The A-1 Steak Sauce is public domain since it's lacked a copyright notice].

*[https://comicvine.gamespot.com/igor/4005-12588 ComicVine]
*[https://en.wikipedia.org/wiki/Igor_(character) Wikipedia]
*[https://universalmonsters.fandom.com/wiki/Igor_(fictional_character) Universal Monsters Wiki]
*[https://tvtropes.org/pmwiki/pmwiki.php/Main/TheIgor TV Tropes]
*[https://frankenstein.fandom.com/wiki/Fritz Frankenstein Wiki]
*[https://web.archive.org/web/20170319043316/https://www.imdb.com/character/ch0002568/ Imdb]
*[https://ultimatepopculture.fandom.com/wiki/Igor_(character) Ultimate Pop Culture Wiki]
*[https://draculavoice.com/essays/hunchback His Humble Hunchback: The Stock Character History of “Igor”]
*[https://tvtropes.org/pmwiki/pmwiki.php/Main/TheIgor TV Tropes]
*[https://www.comics.org/character/3022/ GCD]
*Disney Wiki
*[Https://fictional-characters-in-media.fandom.com/wiki/Igor Fictional Characters In Media Wiki]
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