#FeedBBB

The theme of the reality show is such that each housemate will use a cellphone to capture moments in the house during a time determined by the production. The cell phone only allows them to post photos and videos to #FeedBBB, and see what other housemates say about each other. It does not allow contact with the outside world.

1. FeedBBB introduced an app akin to Tinder called "Arrow" in season twenty-one, which housemates used to pick out their love interests in the house. The "HoH Podcast" is recorded weekly and published on the GShow website. The housemates can see when it is being recorded but do not hear the content.^[3]

Nomination Superpower

Starting on the day the cast list was unveiled, the public voted to grant three "Civilians" and three "Celebrities" immunity from the first eviction period. The six selected housemates lived in a House Next Door and joined the Main House on Day 2. Then, one housemate was nominated for eviction.^[4]

Fake Eviction

On week 6, it was announced that there would be a fake eviction. The winner of the Head of Household competition during week 6 would be given immunity during the following week. All final nominees guarantee their spot in the next competition. Instead of voting to evict, the audience would be voting to give powers to two housemates, the most voted and the least voted.

Super HoH

Along with its regular powers, the HoH would also be tasked with splitting their housemates into Haves and Have-Nots as well as choosing what and how much each group would be eating.

Power of Veto

In some weeks, the nominated housemates compete against each other for one last chance to save themselves from eviction. The housemates nominated by the HoH are not eligible to compete and are guaranteed to face Brazil's vote.

Power of No

At the beginning of each week, the previous Head of Household may or may not be given the opportunity to disqualify some housemates from competing in the upcoming HoH competition.

Big Phone

Once in a while, the Big Phone rings, unleashing good or bad consequences on the nomination process for those who decide to answer it.

The Counterattack

The counterattack is a surprise power given to either the HoH's nominee and/or the House's nominee in which they have the opportunity to automatically nominate an additional housemate for eviction. While viewers are informed when the power will be featured in advance (on Thursdays before the Head of Household competition even takes place), the housemates are only informed about the twist on the spot, during Sunday's live nominations.

Notes

• ^Note 1 :     As part of the Nomination Superpower twist, Arthur, Fiuk, Juliette, Lumena, Projota and Viih received immunity for the first nomination through the public vote on Day 1. However, they also had to choose, as a group, one housemate to nominate for eviction on Day 7. They nominated Rodolffo.^[4]
• ^Note 2 :   On Day 1, 14 housemates that were not part of the Superpower group competed in a pairs endurance competition. Lucas & Nego Di won and participated in a draw, which resulted in Nego Di winning a reward of a PlayStation 5 and Lucas winning immunity for the first nomination.^[6]
• ^Note 3 :   On Day 6, João Luiz answered the Big Phone and was told to immediately nominate three housemates for eviction; he chose Arcrebiano, Rodolffo and Sarah. A few minutes later, Arcrebiano answered the second Big Phone call and was told to save one of João Luiz's three choices; he saved himself. Not long after, the Big Phone rang once again, and Arcrebiano again answered. Arcrebiano was told to save one of the two remaining nominees, Rodolffo or Sarah. He saved Rodolffo, leaving Sarah as a nominee for the first eviction.^[7]
• ^Note 4 :     On Day 12, Arcrebiano answered the Big Phone and was tasked with potentially giving immunity to one housemate and endangering another for eviction. He saved Juliette and nominated Thaís. On Day 14, Gilberto answered the Big Phone and was given the same task; he saved Sarah and nominated Karol. Later that day, Thaís answered the third call of the Big Phone, and was tasked to pick one of the two saved housemates to nominate for eviction, and pick one of the two nominees to save. She saved herself and nominated Juliette.^[8]
• ^Note 5 :   This week, the HoH's nominee had the power to name an additional nominee. During the nominations, Karol, as HoH, nominated Sarah, who in turn nominated Nego Di.^[9]
• ^Note 6 : No Power of Veto competition was held this week.
• ^Note 7 :   This week, Caio, Fiuk and Gilberto, who were finalists in the HoH competition (except for the winner), won the power to choose, as a trio, one housemate to nominate for eviction on Day 25. They nominated Arthur.^[10]
• ^Note 8 : This week, the top 2 vote recipients became the House's Nominees.
• ^Note 9 :   On Day 34, Carla answered the Big Phone and was told to immediately nominate three housemates for eviction. She chose Fiuk, Lumena and Rodolffo.^[11] Later, the HoH's nominee had to save one of these three nominees. Projota saved Fiuk.^[11]
• ^Note 10 : This week, the Power of Immunity winner won immunity for themselves, rather than having been forced to give immunity.^[11]
• ^Note 11 :   Week 6 was a fake eviction week.^[12][13] As the HoH during a Fake Eviction week, Rodolffo received immunity for the following week.^[14]
• ^Note 12 :   The HoH had to nominate two housemates (a Have-Not and a Have). Both of these nominees had the power to name an additional nominee. During the nominations, Rodolffo, as HoH, nominated Carla, who in turn nominated Caio, and João Luiz, who in turn nominated Pocah.^[14]
• ^Note 13 : This week, the top 3 vote recipients became the House's Nominees.^[15]
• ^Note 14 : On the week following the fake eviction, housemates nominated for fake eviction could not be desqualified from competing in the next HoH competition. Also, the vote in Diary Room of the least voted housemate to move, Arthur, would count as two.^[16]
• ^Note 15 :   This week, the first duo eliminated in the HoH endurance competition were nominated for eviction. Carla & Fiuk were the first to leave and were automatically nominated for eviction.^[17]
• ^Note 16 :   As one of the duo winners of the HoH endurance competition, Sarah won immunity for this week.^[17]
• ^Note 17 : As Head of Household, Gilberto was forced to break the tie between Caio and Juliette (with four votes each). He nominated Caio.
• ^Note 18 : On Day 62, Gilberto answered the Big Phone and chose Sarah to wear a white wristband. On Sunday, it was announced that the chosen one would be the first one to vote on a face to face live nomination, and could choose the next one to go.^[18]
• ^Note 19 :   This week, both the HoH's and the House’s nominee had the power to name an additional nominee. During the nominations, Arthur, as HoH, nominated Juliette, who in turn nominated Rodolffo. The Housemates nominated Sarah, who in turn nominated Thaís.^[18]
• ^Note 20 : This week, the Housemates voted in Face-to-Face nominations.^[18]
• ^Note 21 : This week, the Housemates had two rounds of voting that would determine two House Nominees. The first round of voting was a normal vote (with votes cast privately in the Diary Room), while the second was a face to face vote. The Housemate with the most votes in each round of voting was nominated.^[19]
• ^Note 22 : As Head of Household, Viih was forced to break the tie between Juliette and Rodolffo (with four votes each) to determine the House's first nominee. She nominated Rodolffo.
• ^Note 23 : As Head of Household, Viih was forced to break the tie between Caio and Juliette (with four votes each) to determine the House's second nominee. She nominated Caio.
• ^Note 24 :   This week, the House’s second nominee (nominated from face-to-face voting) had the power to name an additional nominee. During the nominations, the Housemates nominated Caio, who in turn nominated Juliette.^[19]
• ^Note 25 :   This week, the HoH competition featured an "Evil Finale", after which Fiuk, as the loser, was automatically nominated for eviction.^[20]
• ^Note 26 : The HoH had to nominate two housemates. Between them, one had to be on the Monster Punishment.^[21]
• ^Note 27 : This week features the last Power of Immunity competition of this season.^[21]
• ^Note 28 : This week, the housemates had to vote for two different housemates during nominations. Two Housemates would then be nominated from this vote.^[21]
• ^Note 29 : As Head of Household, Viih was forced to break the tie between Caio, João Luiz, Juliette and Pocah (with three votes each) to determine the House's second nominee. She nominated Caio.
• ^Note 30 :   On Day 88, the House's nominee had the power to name an additional nominee. During the nominations, the Housemates nominated Viih, who in turn nominated Fiuk.^[22]
• ^Note 31 :   On Day 91, the HoH's nominee had the power to name an additional nominee. During the nominations, Gilberto, as HoH, nominated Camilla, who in turn nominated Pocah.
• ^Note 32 :     On Day 93, the HoH's nominee had the power to save one of the housemates. During the nominations, Juliette, as HoH, nominated Pocah, who in turn saved Fiuk, automatically nominating Camilla and Gilberto for eviction with her.^[23]
• ^Note 33 :     Fiuk won the final competition, winning immunity from the final eviction and granting him a place in the Finale. Camilla, Gilberto and Juliette were automatically nominated for eviction by default to compete for the last two finale spots.
• ^Note 34 : For the final, the public will vote for the housemate they want to win Big Brother Brasil 21.

Have and Have-Nots

• ^Note 1 : On week 6, Juliette became a have-not after Arthur picked her for the Monster Punishment along with Fiuk, who was already a have-not.
• ^Note 2 : On week 7, Sarah became a have-not after Projota picked her for the Monster Punishment along with João Luiz, who was already a have-not.
• ^Note 3 : On week 8, Rodolffo became a have-not after Viih picked him for the Monster Punishment along with Arthur, who was already a have-not.
• ^Note 4 : On week 11, Arthur became a have-not after João Luiz picked him for the Monster Punishment along with Pocah, who was already a have-not.
• ^Note 5 : On week 12, Arthur became a have-not after Camilla picked him for the Monster Punishment along with Caio and Gilberto, who were already have-nots.

Karol Conká

Karol's behavior and actions towards other housemates garnered a very negative reception from the viewers and public personalities. This included Karol's encouragement of outcasting certain housemates, aggressive comments that sparked discussions regarding psychological abuse and prejudiced comments that ranged from gaslighting, xenophobia, religious intolerance and sexual harassment.

Accusations of harassment

Polemics with student groups

During a conversation during late February 3 in the "Haves" kitchen, Lucas had tried to make peace with Nego Di following a series of arguments between them in the past few days. The comedian refused the actor's apologies and confirmed he would veto him in the next Head of Household competition. After that, he called Lucas a bad person, and, by the end of the discussion, said: "Wow, bro, for God's sake. This revolution you make, defending hobos."

After using the term "hobo" ("vagabundo" in Portuguese), Nego Di would be referring to secondary students who occupied school in 2015, during a protest against the state government of São Paulo due to budget cuts in education, at the time headed by Governor Geraldo Alckmin, of which Lucas was one of the leaders of the movement.^[37] Nego Di's speech sparked a lot of backlash, causing the release of a note from student movements and organizations, such as the Brazilian Union of Secondarist Students (Ubes) and the National Union of Students (UNE).^[38][39]

Colorism

In the late hours of February 5, during a conversation in the colored bedroom, Nego Di, Karol Conká and Lumena Aleluia were mocking Gilberto Nogueira's skin color, questioning the veracity of his self-declaration as a black person, using pejorative terms against him, such as saying that he was "not black, only someone who needed a good scrub" and that his appearance was akin to a Neanderthal.^[40] At the beginning of the daily edition of the program, presenter Tiago Leifert gave a short comment about the polemic, besides saying that the show also sparks discussions about relevant subjects for the society, before airing the conversation between Nego Di, Karol and Lumena, which did not include more xenophobic remarks that were made against Gilberto and fellow housemate Juliette Freire, who are both from the Northeastern region of Brazil. On the same day, the show's executive producer, Boninho, in an Instagram post, showed that the search for the term "colorism" had a growth of 100% in Google following the episode.^[41]

Stimulation of suffering

In an interview to newspaper Metrópoles, sociologist Silvia Viana, the author of the book Rituais de Sofrimento (Suffering Rituals), which analyzes the reality show's structure, said that Big Brother's production team was the main group responsible for the conflicts inside the house at the beginning of the show, based on the elements of the game.^[42]

If there's no fight, there's no reality show. The discussion are not only linked to feminism or racism, for example, the criteria change and they use people who are linked to subjects that are 'trending'. It's not manipulation, it's a marketing strategy [...] What matters the least is the criteria, the fight will happen. We're not seeing people being bad or perverse, what we see on screen is the same thing that happens on our side: a competition that aims a ghostly survival, that's what everyone does everyday. The show only stimulates that there's only one place for the winner and the people are induce to act how they act. [...] The show conquers the active engagement, frequently maniac, in this gear of making suffer.

— Silvia Viana

A group of psychologists of ANPSINEP (National Articulation of Black Psychologists) signed a note criticizing the show for letting Lucas suffer attacks, including from black housemates and that such a situation reinforces the "racist structure".^[43]

Lucas's withdrawal and external interferences

On the morning of February 7, actor Lucas Penteado decided to leave the show after being involved in many arguments with the majority of the housemates. His leaving was celebrated by most housemates, who were already on bad terms with him following an outcasting movement lead by Projota and Karol Conká, despite his insistence on apologizing for his prior actions. Before leaving, Lucas kissed Gilberto (the first kiss between men in the TV show) and came out as bisexual, receiving many negative comments from other housemates, some of them from Lumena (a lesbian psychologist), Karol Conká and Pocah, who disapproved of his attitude and claimed he was pretending to be bisexual in order to use the LGBT movement as a platform to benefit himself in the game. The housemates involved in the controversy received accusations of psychological torture, besides rising polemics with their comments and attitudes in the house, from Karol and Pocah (both bisexuals).^[44][45]

Victim of biphobia after the kiss, Lucas received negative reception from the majority of the housemates, who questioned his sexuality. Following that, politicians and media personalities condemned the prejudiced act suffered by him, making the LGBTI+ National Alliance release a note against such attacks;^[46][47][48] the President of the Alliance, Toni Reis, said that "associate attorneys are preparing to file a lawsuit against the responsible for the attacks".^[49] Minutes after his departure, Projota decided to enter the Diary Room, and audio from his conversation with Boninho, the show's executive producer, was accidentally aired during the live feeds; in the conversation, Boninho had convinced the rapper to stay in the game (as he had also threatened to leave following Lucas' constant controversies in the house), by claiming that production was unaware of Lucas' issues with alcohol, affirming that he "turned into a monster", besides saying that the nerves would calm down without his presence.^[50] In the night of that same day, Rede Globo, in an official note to the press, confirmed that the voice that leaked during the talk with Projota was Boninho's due to an "operational failure", but highlighted that "[they] always cared for the health and security of all of the housemates" and that there's a team of medics and psychologists available who offer support to all housemates, if necessary. Highlighted, also, that the situation has been resolved after a conversation with the housemates during the morning.^[51]

Fraud in Veto competition

On February 8, in a conversation with housemates in the Head of Household bedroom, Karol Conká spoke of a supposed breach she had exploited in order to win the Veto competition, which are luck challenges; the competition consisted of the three players taking turns on opening hoses numbered from 1 to 21, with the winner being whoever decided to open the hose with the number 17, dousing the two other opponents. In the conversation, Karol said that she noticed some hoses were connected to the taps, and some were not, claiming to have paid attention to that and selecting the seventeenth hose after noticing that it looked different from the other ones. After the conversation, viewers accused Karol of cheating, as the players were explicitly told to stand above a marking on the ground from afar the hoses before deciding which one they would open; Karol had purposely asked to open the hose of number 20, which had been already selected by Arcrebiano seconds prior, in order to have an excuse to walk around the hoses and closely inspect them to find any possible irregularities that could lead her into picking the correct one.

Following the reveal, viewers started to ask for the cancellation of the challenge on social media networks, garnering support from many celebrities and former Big Brother housemates, by claiming that the network's allowance of Karol's exploit during the challenge was an attempt of further keeping her in the competition for ratings (albeit negative ones) by saving her from the block and almost certain eviction, following her constant negative behavior in the house that had long sparked criticism from both viewers and housemates.^[52] Arcrebiano's team published a note requesting a review of the competition by the show's production team, requesting a redo of the competition or for the nominations to be cancelled should the fraud be confirmed.^[53]

The show's production team informed that the challenge result would not be cancelled and that the nominations would still be valid. In a note addressing the viewers, TV Globo highlighted that the hoses were not real and that the water system was opened manually by the direction once the hose of number 17 was chosen, citing Karol's strategy and supposed exploit of the challenge as nothing more than luck.^[54]

Brazilian ratings

All numbers are in points and provided by Kantar Ibope Media.

• In 2021, each point represents 268.278 households in 15 market cities in Brazil (76.577 households in São Paulo).
• ^Note 1 : This episode aired on a special time at 10:30 p.m.
• ^Note 2 : This episode aired on a special time at 11:45 p.m.