"Saiyyan Main Aayi Ghar Chhod Ke" was remixed by Andy Votel and included in the International album Hindi Horrorcore.
The first movie to pair Mithun and Ranjeeta who would go on to appear in a over a dozen films together in the 1980s until they last film together "Gunahon Ka Devta" in 1990. After 22 years, they most recently reunited as a ageing couple in "Zindagi Tere Naam" in 2012.
It was during the making of Bhayanak that things went terrible between director Sawan Kumar Tak and his wife music composer Usha Khanna. Usha was giving the music for Mithun's Bhayanak. She had a soft spot for Mithun because he was friends with her brother Kuku Khanna. Sawan Kumar Tak blasted Mithun in the Stardust magazine March 1982.He stated that he came home at 5 in the morning unexpectedly and found Mithun, Madhu Kapoor and Usha Khanna all in his bedroom. Mithun told Sawaan he had to use the phone that's why he was there. Sawaan did not buy the story. Sawaan stated he was suspicious of Mithun and Usha Khanna for a long time. After he married Usha Khanna,Mithun was stop coming to their house. He always heard the rumor's and he finally believed it when he saw them in the bedroom..It was then he decided to divorce Usha. Sawan stated that Mithun was not his friend for him to be using his house for his escapades.
This is Mithun Da's first horror film. Mithunda did only two horror films in his career.
The other one is Bees Saal Baad.
Amol Palekar was signed for the film in a guest appearance but opted out.