Violet Parr. The daughter of the Parr family of Superheroes, shy and meek with a tendency to 'hide' herself via her powers of invisibility and generating reflective fields.
For the most part, you will find her... well, it can be hard to find her at times. So often will she try to keep herself from the eyes of the crowd if possible, keeping herself withdrawn or cloaking her body (if a little pointless, due to the fact her clothes don't vanish with her!) when she feels a little bashful or threatened. This is reflected in the way she often dresses, choosing baggy clothes of darker tones like her navy blue sweater, jeans that she is forced to turn-up due to their length in the legs and her black converse-style sneakers. Her hair, also, is notably done in a style that hides much of her face.
In regards to her powers, yes. Her ability to turn invisible may seem kind of pointless since she can only completely cloak herself when either... well, naked, or wearing her special super-heroine suit that vanishes along with her, but that is why she can utilize her force fields when staying out of sight isn't an option. Violet can generate spherical-shaped shields at will, varying with size. Of course, the bigger the shield, the greater the toll it takes to maintain it over a period of time. These shields, however, are virtually impenetrable without forcing Violet to take down the entire thing altogether, providing her with an immaculate defensive capability she can use to protect herself and others.