Joseph McCalister

 was the winner of Big Brother 1.

Joseph was a figurehead of the season and pioneered his way through the game with his social tactics and competition skills. Joseph was a key player in the Hunt for the SPOV and teamed up with Oli to unlock the Hidden Room prior to week 2; Vince, however, had already claimed the SPOV, rendering his hunt useless. Joseph's first nomination was in the second half of Week 3, but Karoline's spite for Oli led to her saving Joseph from possible elimination, leaving Ryan to be evicted that night.

However, when the jury phase hit and the gender lines were drawn, Joseph found himself dead in the middle of the house and manipulated his position to his advantage. Joseph was part of the big fight of the season when the boys' majority alliance fell apart, with Joseph arguing alongside Dominic against Jude. Joseph was left on the outs but he was still able to win the Week 6 POV and survived the eviction he was supposed to go home in.

Joseph was then able to survive numerous weeks in the house with his competition prowess, winning the most competitions ever with 3 HOH s and 3 POV s, switching power roles back and forth with Jude. His late-game friendly rivalry with her eventually came to an end when Vince won the Final HOH in a massive upset, leaving Joseph and Jude nominated; Vince shockingly evicted the latter of the two.

The jury universally panned Vince for his lack of resume and his ridiculously long eviction speech, which led to Joseph's 6-3 victory over him. Although Joseph played a weaker social game than Vince, his flashiness and ability to survive against the odds led up to a surprisingly persuasive underdog story.

Joseph is regarded as one of the greatest players of BB:OA alongside Jude Carrington and Jessica Grafs.