ANSWER : "Parvati Patil"Brave, certainly yes I am, - She was sorted into Gryffindor, participated in The Battle at Hogwarts & fearlessly defended Nevile against Malfoy in first book..
Good looks, yes,I have been complimented for that too I am.- Dean Thomas's comment about Patil twins in Goblet of Fire - "I still can't work out how you two got the two best-looking girls in the year."
But what matters most are the qualities within,
"Never judge a book by its cover"- I am a true testimony to this saying. - The patil twins were identical twin sisters & yet Padma got sorted into Ravenclaw while Parvati became a Gryffindor, hence, "never judge a book by its cover", its the qualities within that matters & makes all the differnce..
I am the daughter of mountain,- Parvati in Sanskrit means "she who is of the mountain" or in other words "daughter of mountain"
I participated in the great battle which was won,- She participated in Battle at Hogwarts
Now guess who I am, quickly put your thinking caps on.- Parvati Patil