Tsumihoroboshi, or just Tsumi, possesses one of the longest character names in the history of the world, I think. Her name means "atonement."

She is one of the central characters in my woefully unfinished YA novel, Namida no Megami. Tsumi is a warrior woman, known by most as the Lady of the Winds. She has no memory of her past, but she is a fierce warrior with little interest in sentimentality, so she doesn't really care.

Her key character traits are her love of bizarre and often disgusting foods, her ability to drink everyone else under the table, and her "stab them first, ask questions later" mentality.