Question: Who stared alongside Bela Lugosi in a 1934 horror film but was missing from the 1941 remake?

Context paragraphs:
The Black Cat (1934 film): The Black Cat is a 1934 American Pre-Code horror film directed by Edgar G. Ulmer and starring Béla Lugosi and Boris Karloff.  The picture was the first of eight movies (six of which were produced by Universal) to pair the two iconic actors.  It became Universal Pictures' biggest box office hit of the year, and was also notable for being one of the first movies with an almost continuous music score.  Lugosi also appeared in the 1941 film with the same title.

List of horror films of the 1930s: A list of horror films released in the 1930s.  The American horror film was properly created in the 1930s, most notably the Universal Horror film productions. " White Zombie" is considered to be the first feature length zombie film and has been described as the archetype and model of all zombie movies.  A number of Hollywood actors made a name for themselves in horror films of this decade, in particular Bela Lugosi ("Dracula", 1931) and Boris Karloff ("Frankenstein", 1931).  Fredric March won an Academy Award for Best Actor in "Dr. Jekyll and Mr. Hyde", 1931.  Films of this era frequently took their inspiration from the literature of gothic horror and more often dealt with themes of science versus religion rather than supernatural themes.

Revolt of the Zombies: Revolt of the Zombies is a 1936 American horror film directed and produced by the Halperin Brothers which stars Dean Jagger and Dorothy Stone.  It is one of the earliest zombie films.  Although it was conceived as a loose sequel to Victor Halperin's moderately successful 1932 film "White Zombie", when compared with Halperin's previous work, this film is generally regarded as a disappointment.  Although he is not credited in the film, Bela Lugosi's eyes appear in "Revolt of the Zombies" whenever zombifying-powers are used; it is the same image of Lugosi's eyes used in the film "White Zombie".  "Revolt of the Zombies" is in the public domain, and can be copied or distributed without regard to copyright law.

Night Monster: Night Monster is a 1942 American black-and-white horror film featuring Bela Lugosi and produced and distributed by Universal Pictures Company.  The movie uses an original story and screenplay by Clarence Upson Young and was produced and directed by Ford Beebe.  For box office value, star billing was given to Bela Lugosi and Lionel Atwill, but the lead roles were played by Ralph Morgan, Irene Hervey and Don Porter, with Atwill in a character role as a pompous doctor who becomes a victim to the title character, and Lugosi in a small part as a butler.

Chandu the Magician (film): Chandu the Magician is a 1932 American Pre-Code mystery-fantasy film starring Edmund Lowe as Frank Chandler and Bela Lugosi as the villain Roxor that he must stop.  Based on the radio play of the same name, written by Harry A. Earnshaw, Vera M. Oldham and R.R. Morgan.  The radio series ran from 1932 to 1933 and Fox obtained the rights hoping the film would appeal to a ready-made audience.  In 1934 Chandu returned in a twelve part serial, "The Return of Chandu", with Bela Lugosi ironically playing the title role.

Night of Terror: Night of Terror is a 1933 American Pre-Code horror film directed by Benjamin Stoloff, and starring Bela Lugosi, Sally Blane, Wallace Ford, and Tully Marshall.  Despite receiving top billing, Bela Lugosi has a relatively small part.  The film is also known as He Lived to Kill and Terror in the Night.

Bela Lugosi Meets a Brooklyn Gorilla: Bela Lugosi Meets a Brooklyn Gorilla (also known as The Boys from Brooklyn) is a 1952 American comedy horror science fiction film directed by William Beaudine and starring horror veteran Bela Lugosi and nightclub comedians Duke Mitchell and Sammy Petrillo in roles approximating the then popular duo of Dean Martin and Jerry Lewis.

Scared to Death: Scared to Death is a 1947 thriller film directed by Christy Cabanne and starring Bela Lugosi.  The picture was filmed in Cinecolor.  The film is historically important as the only color film in which Bela Lugosi has a starring role.

The Black Cat (1941 film): The Black Cat is a 1941 film loosely based on the short story by Edgar Allan Poe.  The comedy/horror film was directed by Albert S. Rogell, starring Basil Rathbone and featuring supporting performances by Bela Lugosi and Alan Ladd in small roles.  Lugosi also stars in a 1934 film with the same title.

Invisible Ghost: Invisible Ghost (1941) is an American horror film starring Bela Lugosi, shot in black and white, and directed by Joseph H. Lewis.  It was the first of the nine movies interpreted by Bela Lugosi for Sam Katzman at Monogram Pictures.

Supporting paragraphs: The Black Cat (1941 film) The Black Cat (1934 film)
Answer: Boris Karloff