List of Big Brother Australia housemates (2012 series)

Ten new Housemates entered the Big Brother House during Launch Night on the 2012 series of Big Brother Australia. Four males entered the house the next day, totalling 14 Housemates. After four weeks and three evictions had passed, two intruders were introduced to the house at different intervals, raising the total to 16 housemates.

Angela Beatrix Murray (born 18 January 1991) is a 21-year-old sales representative from the Gold Coast. Angie shares a loft with three men, and is often referred to as "Mangie" for her tomboy-ish-behavior. She was the third Housemate to enter on Launch Night. She was nominated on Day 29 along with Estelle and Ray and survived the Day 35 eviction with 45% of the vote to save. On Day 39 Angie and Sam hook up with Sam leaving a hickey on her neck causing a huge fight between her and Layla. Angie was nominated again on Day 43 and survived the eviction with 48% of the vote. She was nominated again the following week. She escaped eviction again with 19% of the vote while Bradley was evicted. Angie was nominated again the following week however due to Josh's departure she was guaranteed another week in the house. She became the ninth housemate to evicted on Day 70 after receiving 10.6% of the vote, with only a very small margin of 0.8% to save between her and Sam. Angie admitted to secretly dating Michael throughout the show.

Secret: Angie was a champion weightlifter.

Ava David An intruder who arrived on day 29. She became very attached to Josh and Estelle during her time in the house, and was regarded by other housemates as a kind but private person, who they occasionally referred to as "Princess Ava" or the 'Clip-on-Koala (from Ukraine)'. Ava was nominated on Day 43 and faced eviction with Angie and Estelle. She became the sixth housemate to be evicted on Day 51 with only 14% of the vote to save.

Secret: As an intruder, Ava entered the house after the cessation of the Secrets task and was exempt from needing to reveal a secret.

Benjamin Norris (born 17 February 1980) is a 32-year-old accounts manager from Melbourne and was the fourteenth housemate to enter the house in the early hours of Day 3. Benjamin was nominated for eviction along with Bradley and Ryan on Day 15. He narrowly survived the eviction on Day 21 with 33% of the vote to save. only 1% separated him from Ryan who was the evictee. Ben was not up for nomination until Day 63 where he faced eviction with 5 other housemates. He survived the eviction with 20.8% while Angie was evicted. Ben was nominated in the following week along with Stacy and Estelle, he escaped eviction again with 30% of the vote while his close ally Stacy was evicted. Ben along with the 5 other remaining housemates were told that every vote Australia cast would be a vote to win. On Day 84 Ben survived the eviction with 20% of the vote to win. The next day he survived the double eviction determining the final three housemates for Big Brother 2012. Ben was crowned the winner of the series on Day 87 with a prize of A$250,000 and a Holden Cruze with 40% of the vote to win. He is openly gay, and stated that he has a boyfriend after entering the house. An article in NW magazine in September 2012 drew a comparison between Ben and Johnnie Rotten from the first Australian season for his habit of offering consolation and advice to housemates after nominating and complaining about them to others.

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