The below description is taken from LEGO.com.
You may have seen lion and tiger tamers before, but in the land of monsters, it’s the cats who tame the people! The Tiger Woman is the world’s greatest Minifigure tamer. At the famous Monster Circus, she leads her team of well-trained firefighters, construction workers, and other everyday people in amazing routines of agility and grace – jumping through hoops, balancing on each other’s backs, and sitting up on command.
The Tiger Woman was once a regular Minifigure, too…until an ancient artifact from a long-lost temple transformed her into an incredible mystical creature with stripes, fuzzy ears, and a twitching tail. Now that she’s half-feline, she never wants to go back to being normal again. She can see in the dark, she sleeps on top of the cupboard, and she gets to eat all the mice she can catch. Yum!