I hadn't been watching this but I've been ill in bed so just binge watched. I thought Hedgehog was Michael Ball straight away as he "died every night at 8.30" - which would be Marius in Les Miserables. Then there were clues to Hairspray and Phantom - both of which he was in - and something about "having a Ball". Then he said he sometimes wears heels on stage - which he did in Hairspray.
I think Daisy is Sheila Ferguson - one of the three degrees - she was on I'm a celeb hence up to her arm in Australian hellhole and all the American/ jerk cooking is right and she can definitely sing.
I think Queen Bee is Kimberley Wyatt or maybe Ashley Roberts.
Monster - Ceelo Green
Unicorn- John Barrowman
Octopus - Kylie
I'm struggling with duck and silver fox. Silver fox May well be Denise Van Outen.