The Australian soap star exited the compound to considerable cheers from the crowd, leaving Rylan Clark and Heidi & Spencer as the final housemates.
Claire Richards and Neil 'Razor' Ruddock were evicted earlier in the evening, coming in fourth and fifth place respectively.
Ryan told Brian Dowling afterwards that he had expected to go first, saying he thought he wasn't "as interesting" as the others.
The Neighbours stalwart then called Heidi & Spencer a "pack of whingers" for their complaints about being so far from home, when he was alone and on "the other side of the world".
He summed up the pair by saying: "They're here to be baddies, aren't they? If they're here to be baddies, then they've done a good job."
Ryan ended by picking Razor as the housemate with the worst habits, Spencer as the laziest, and Heidi & Spencer as the contestant least deserving of their place.
Photo gallery - Celebrity Big Brother day 21:
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