KGBeast is a fictional character, a supervillain appearing in DC Comics publications primarily as an opponent of Batman.
Anatoli Knyazev, code-named "The Beast", and known to the C.I.A. as the "KGBeast" was trained as an assassin by "The Hammer," a top secret cell of the KGB. In addition to being the master of several martial arts, his strength was cybernetically enhanced, and he had also mastered the use of every deadly weapon known. At the time of his first appearance, he was rumored to have killed at least 200 people, including Anwar El Sadat.
The Beast made his first appearance in the storyline, "Ten Nights of The Beast" (Batman #417 - 420, which was later reprinted as a trade paperback of the same name.)
The Hammer's general, angry that the Soviet government was working to better relations with the United States, sent Knyazev on a mission to kill 10 high-ranking U.S. officials in an attempt to cripple the Star Wars program. These include scientists, civilian administrators, military figures, and politicians, the last of whom being then-U.S. President Ronald Reagan, scheduled to visit Gotham City.
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Official Site: D.C Comics
Links: Wikipedia Un. Guide to the D.C Universe Dark Knight