Hattress

The Hattress, originally an enemy encountered in the former corruption of Wonderland, is an ally of Allen. She, mad with a desire for a mechanical and steam-powered world, has become half-metallic and more insane than ever.

Personality
She is quite oblivious to everything and knows not who she serves at times of war. Scatter-brained and nostalgic, she is one of Allen's more unwanted spawns of insanity. She puts her own goals before others' and is focused on what she wants rather than showing any empathy or sympathy.

It is possible that she may be a schizophrenic, although, that is just speculation due to her gibberish dialogue and her inability to construct her own train of thought.

Appearance
The Hattress is a tall woman, slender and sickly pale, most of her limbs and joins replaced with visible machinery. She has donned an asylum "uniform" along with her checkered top hat and her long hair is graying with splatters of green here and there.

Trivia

 * The Hattress's original character is the Mad Hatter from Lewis Carroll's Alice's Adventures in Wonderland and American McGee's Alice series.