She is probably the best character for competitive 1v1s in the entire game. She deserves to be in this game more than a couple other characters even though she doesn't have a huge history.
Playstation All-Stars Battle Royale Accomplishments:
1st Ever rank 999 (only for full game, not beta)
1st Ever Double Black Belt In 1st 2 seasons (2v2 and Free For All)
1st Ever Black Belt (Acquired in Free For All)
1st Ever 2v2 Player to 300, 400, 500-1300 wins
1st Ever 2v2 Player to Black Belt level 300
1st Ever Free For All Player to Black Belt level 100
2nd Ever 2v2 Black Belt
I think she is a good character, and she is fun to play as.
HOWEVER, I do agree that she is poorly represented from her game. Her moveset is terrible when you look what you do in Fat Princess, it should of focused on her workers almost exclusively. She should be cel-shaded like Sly and Kat, and her name is Princess Plump.