Rorschach (born Walter Joseph Kovacs) is a fictional character and an anti-hero in the acclaimed 1986 graphic novel miniseries Watchmen, published by DC Comics. Rorschach was created by writer Alan Moore with artist Dave Gibbons, but as with most of the main characters in the series, he was an analogue for a Charlton Comics character, in this case Steve Ditko's the Question and Mr. A.
Rorschach is 5'6" tall and weighs 140 pounds, and, as Walter Kovacs (his "disguise"), he appears as a red-haired, expressionless man who always carries with him a sign that reads "THE END IS NIGH". Most people who see Kovacs consider him ugly and Rorschach himself states that he cannot bear to look upon his human face, considering his mask (or true "face") to be beautiful instead.
In Rorschach's nocturnal activities he wears a striped purple business suit, similarly colored leather gloves, a grayed scarf, and heavily unpolished elevator shoes. More signature of his apparel is his brown trench coat with his matching fedora hat that has a light purple stripe. However, Rorschach's most defining feature of his costume is his ink-blotted mask.
Rorschach's mask, which he considers his true "face", is a part of fabric made from a material derived from the technologies of Dr. Manhattan, and it is blank except from the front, where two viscous liquids, one black and one white, are between two layers of latex. The liquids continually shift in response to heat and pressure, forming symmetrical patterns like those of a Rorschach inkblot test while never mixing, thus never producing a gray color.
Source: Wikipedia, "Rorschach (comics)", available under the CC-BY-SA License.