Over the years, Big Brother has produced some zany, controversial, and adversarial reality moments on television, and some of the series' former stars may regret their times on the show. While certain BB stars found love and celebrity due to their stints on the series, others showcased their worst qualities for the world to see, via some appalling behavior inside and outside of the Big Brother house.

Contestants who appear on the show are filmed 24/7, making it nearly impossible for any of them to avoid being captured during their most unflattering moments. Naturally, some Big Brother contestants have gone too far, with actions or candid banter that really crossed the line. In certain cases, their bad behavior was directed at other houseguests. While some former stars of the show look forward to making special appearances on the series, others are unlikely to ever be welcomed back into the BB house.

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Amanda Zuckerman (Season 15)

Big Brother's Amanda Zuckerman

Although much of the fallout for season 15 fell onto Aaryn Gries due to production airing her nasty remarks in the on-air episodes, Zuckerman's thoughtless words littered the live feeds and countless YouTube edits. In fact, Zuckerman was the most vocal cast member in the house, albeit behind other houseguests' backs. In the diary room, she often criticized the racist and homophobic remarks made by her housemates, and this made her litany of derogatory statements all the more hypocritical.

Zuckerman tried to boss around much of the cast, and her attitude triggered uncomfortable and awkward moments with other Big Brother houseguests. The season was the beginning of progressively more mature casting. Zuckerman, who is now married with two young sons, will probably soon come to regret her time in the house, as her past inflammatory words come back to haunt her.

Jackson Michie (Season 21)

Jackson Michie Big Brother

Jackson Michie actually won his season, despite bullying and harassing his fellow houseguests. He also managed to nestle into a "showmance" with fellow cast member Holly Allen. However, outside of the house, Michie was under the constant scrutiny of fans who vehemently disliked his bad attitude, demanding personality, and derogatory treatment of other housemates. There were also allegations that he abused steroids prior to entering the BB house. In addition, he was accused of manipulating production staff in order to get forbidden things into the house.

Host Julie Chen questioned him about his behavior in the house, alerting him to the frosty fan response he had earned. When Michie came out of the house after winning the competition, he was stunned by the conversations surrounding his time in the house, and seemingly oblivious to his actions. He was one of the greatest physical players to ever enter the game, but that won't be what he's remembered for.

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Mike "Boogie" Malin (Seasons 2, 7, and 14)

Mike Boogie Malin on Big Brother

Malin's victory is now a distant memory. He won season 7, and for a while, it seemed like the villainous character was doing well for himself outside of the BB house. However, things took a turn for the worse for the BB alum. After a series of financial difficulties, including several failed restaurants and the owing of back rent, Malin hit rock bottom.

In 2020, Malin was charged with a DUI and arrested for drug possession. A year later, after Dr. Will Kirby refused to participate in The Amazing Race with him, Malin was charged with stalking the former BB ally and friend. Although Malin was an entertaining (yet diabolical) houseguest, it's pretty much a sure thing that audiences won't be seeing "Boogie" in the Big Brother house again.

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