In 2018, Sreesanth participated as a celebrity contestant in the twelfth season of "Bigg Boss," the Indian version of the reality TV show "Big Brother", where he finished as the runner up of the show. His stay in the house was highly controversial and he ended up as the most controversial contestant of the season and one of the most controversial contestants of the show in general. While he formed close friendships with fellow housemates including season winner Dipika Kakar and Shivashish Mishra, he frequently engaged in ugly fights with most of the other housemates and even guests including Season 11 contestant Vikas Gupta and threatened to leave the house 299 times. His performance in tasks was questioned as well. However, none of these diminished his popularity and he was praised by a large number of supporters, celebrities, former contestants and even fellow housemates for his innocent nature and straightforward attitude. Sreesanth also relived many events of his cricket career in the show, including the slapgate and spot-fixing incidents.