Calliope Milton

 was a houseguest on Big Brother 1.

Calliope started the game off by joining a three-person alliance with Thomas and William on Day 1, though, she revealed that she wouldn't stay true to the alliance. During the first HoH competition, herself, Jay, and Sam were left standing. Jay made a deal that he wouldn't nominate the two of them if he were to win HoH, and she got up, giving Jay the first HoH win. She then joined an alliance with Avery, Jay, Robin, Mark, and Cris. Entering Week 2, Avery had a backdoor plan for Sam. Calliope ended up winning the Power of Veto, and pulled William off of the chopping block. In Week 3, her ally, Jay, won his second HoH, making herself, Jay, and Robin big threats, as they were a clear trio. She then won her second Power of Veto, and decided not to use it, and didn't give Carla or Samantha, the nominees, the chance to plead their case. This led to an altercation with Calliope and Robin against Carla and Samantha. Carla was evicted later in the week. Going into Week 4, Justin won the HoH, and nominated her and Jay. Justin then won the PoV and chose not to use it. Jay was evicted with a vote of 8-2, but earlier, Luke revealed that it was a Double Eviction. Christine won the Double Eviction HoH and nominated Calliope and Robin. Samantha then won the Double Eviction PoV and chose not to change the nominations, and Calliope was later evicted with a vote of 9-0. Calliope had the chance to come back to the game, but lost, ending her game in 13th place.

Trivia

 * Calliope won the most PoV's in the pre-jury phase, with two wins.