The Unicorn is a minor character in Candy Crush Saga. Tiffi encounters her at level 51 in the fifth episode Minty Meadow. She is crying because she has lost her horn. After completing Level 65, Tiffi uses a trampoline to take some lollipops from the nearby tree. This string becomes the recovered horn of the unicorn.
The Unicorn also makes a cameo in the episode Lollipop Lanterns, the fifth episode in the Dreamworld. There is no story that involves her but she can be seen in the background, but with a dreamy palette-swap.
She appears for the second time in Biscuit Bungalow to pop the bubble that envelops Mr. Piggy's house.