<P> As ruler of the Unikingdom, Princess Unikitty has busy days full of royal responsibilities . She is mostly interested in making sure everyone is happy and ridding the kingdom of negativity, but don't misunderstand her optimism--she is one kitty / unicorn hybrid not to be crossed . While she may be full of boundless energy and creativity, Unikitty is a force to be reckoned with if anyone gets in the way of spreading her positive vibes, especially if anyone makes her own little brother and best friend Puppycorn sad . Also living in the castle are Dr. Fox, the resident scientist, Unikitty's trusty bodyguard, Hawkodile, and Richard, an unhappy 1x3 grey Lego Brick . Through it all, Unikitty and her friends make sure that every day is the happiest and most creative ever while dealing with the evil plots of Doom Lord and her nemesis, Master Frown, from Frown Town . </P> <Ul> <Li> Princess Unikitty (voiced by Tara Strong)--The princess of the Unikingdom who is a cat / unicorn hybrid . She is very happy, playful, cute, and upbeat, but has an angry side that she sometimes struggles to control . She was previously voiced by Alison Brie in the original film . </Li> <Li> Prince Puppycorn (voiced by Grey Griffin)--Unikitty's younger brother, a dog / unicorn hybrid . He is sometimes clueless and dimwitted, but is also loyal, good - hearted and his sister's best friend . </Li> <Li> Dr. Fox (voiced by Kate Micucci)--The castle's resident scientist whose experiments and inventions can both create and resolve problems . </Li> <Li> Hawkodile (voiced by Roger Craig Smith)--Unikitty's trusty hawk / crocodile hybrid bodyguard who has a "macho" personality and appears to have a crush on Dr. Fox . </Li> <Li> Richard (voiced by Roger Craig Smith)--A grey 1x3 Lego brick who is Unikitty's royal advisor and castle caretaker . He speaks with a dull monotone voice and is often the voice of reason, though the others find him boring to listen to . </Li> <Li> Master Frown (voiced by Eric Bauza)--The villain and enemy of Unikitty who comes from Frown Town at the other side of Unikitty's kingdom . He is one of the Doom Lords that spread pain and misery throughout the world . This often causes him to suffer the wrath of Unikitty, who wants to spread fun and joy . </Li> <Li> Brock (voiced by H. Michael Croner)--Master Frown's close friend and roommate who has a neutral personality . Brock is a gravestone . </Li> </Ul> <Li> Princess Unikitty (voiced by Tara Strong)--The princess of the Unikingdom who is a cat / unicorn hybrid . She is very happy, playful, cute, and upbeat, but has an angry side that she sometimes struggles to control . She was previously voiced by Alison Brie in the original film . </Li> <Li> Prince Puppycorn (voiced by Grey Griffin)--Unikitty's younger brother, a dog / unicorn hybrid . He is sometimes clueless and dimwitted, but is also loyal, good - hearted and his sister's best friend . </Li>

Who plays princess unikitty in the lego movie