Unikitty is a character from The Lego Movie. Her homeland was Cloud Cookoo Land before it was destroyed.
Unikitty looks like a pony with a cat's head and a single horn on her head.
She slightly resembles Twilight Sparkle form My Little Pony.
Unikitty has a very happy-go-lucky aditude. She can be emotional at times.
When she gets angry (which isn't often) she turns into a red Pacman like creature.