Alpha-152 (DEAD OR ALIVE)

Alpha-152 is the clone who seems to be made up of pure energy; born with an untainted hate of the world and created to destroy all. She was originally designed as Kasumi's figure made of light, however in the final game she was changed into a translucent/liquid-like form of Kasumi. The final CGI ending of Dead or Alive 4 shows Alpha-152 fleeing the DOATEC's Tritower after a brief fight with Kasumi; the clone's whereabouts and condition remain unknown. (Alpha-152 is commonly regarded to be the most difficult boss in the entire DOA series.)