Colors TV invited the general public to send their video clips through a streaming application called Voot on 15th April in order to audition for the show. It was later revealed by the show makers that this season of the show would feature contestants in pairs (any sort of pairs; friends, co-workers, spouses, siblings, etc). Therefore, declaring the theme “Vichitra Jodis” which translates to “Strange Pairs”.
The Eye Logo
The Bigg Boss “eye” is split, with red on one side and blue on the other; red representing fire and blue representing water.
House pictures were offically released on 16 September 2018; the House followed the theme of a “Beach House”.
|Bigg Boss 12 Outhouse|
Bigg Boss: Outhouse
Four housemates entered the Bigg Boss out-house a day before the launch of the show. The public had power to vote two housemate into House. Exclusive videos from the out-house were streaming on Voot from 15th September 2018. Surbhi Rana, Kriti Verma, Roshmi Banik and Mital Joshi were called into the house with a task called “Tala Khol”, where one of the pairs were to be eliminated on the very first day of the show. 
The participants in the order of appearance and entered in house are
Karanvir Bohra – Television Actor. Karanvir is the son of filmmaker Mahendra Bohra and grandson of actor-producer Ramkumar Bohra. He started his career with the film Tejaa and the television show Just Mohabbat. He later was known for his roles in Shararat, Kyunki Saas Bhi Kabhi Bahu Thi, Kasautii Zindagii Kay, Dil Se Di Dua… Saubhagyavati Bhava?, Qubool Hai and Naagin 2. He also participated in reality shows like Jhalak Dikhhla Jaa 6, Fear Factor: Khatron Ke Khiladi 5 and Nach Baliye 4. He is married to actress Teejay Sidhu and has two daughters.
Sourabh Patel – Farmer and a struggling actor was an assistant casting director for many television shows
Shivashish Mishra – Businessman and a struggling actor who has played a role in SET show Hanuman.
Dipika Kakkar – Television Actress who briefly played the role of Simar in Sasural Simar Ka which aired on Colors TV. She later participated in Jhalak Dikhhla Jaa 8in 2015. In 2017, she participated in Nach Baliye with her husband Shoaib Ibrahim. She made her Bollywood debut from the film Paltan (2018).
- Romil Chaudhary – Lawyer.
- Nirmal Singh – Policeman.
- Neha Pendse – Television and Film Actress. She is known for her role of Sanjana in the Life OK comedy show May I Come In Madam?. She seen in the comedy game show Family Time With Kapil Sharma. She appeared in films like Devdas and Dil Toh Baccha Hai Ji. She has done many marathi movies.
- Anup Jalota – Popular singer who has also sung occasionally for Hindi films. He entered the house with his present girlfriend Jasleen.
- Jasleen Matharu – Small-time singer. She is the girlfriend of Anup Jalota. She made her singing debut with Sukhvinder Singh in the song “Naachunga Saari Raat”. She launched her solo track Love Day.
- Srishty Rode – Television Actress. She rose to fame with the Star One show Yeh Ishq Haaye as Manjari. She was also seen on the popular show Saraswatichandra. She later was seen of the reality show Box Cricket League and popular serial Ishqbaaz.
- Somi Khan – Sales Manager
- Saba Khan – small-time youtuber
- Deepak Thakur – Singer sang songs for Anurag Kashyap’s films
- Urvashi Vani – Deepak Thakur’s Fangirl
- Kriti Verma – MTV Roadies (season 15) Contestant And GST Inspector
- Roshmi Banik – Bussinesswomen
- S. Sreesanth – Indian Cricketer. He was a cricketer who participated in Jhalak Dikhhla Jaa in 2014. He has also been in politics now he has turned to acting, he acted in aksar 2 and he will be making his tollywood debut