The main antagonist of the Ultimo manga. He is the karakuridouji of ultimate evil, and is made as the extreme opposite of Ultimo.
Vice was created by Dr. Dunstan as the representation of pure evil. He is the karakuridouji of K -- whose past self was also his master in the 12th century -- although he doesn't show the least bit of respect for him, and often bosses and threatens him around. He is short-tempered, ill-mannered and has a complete disregard of life that is not his own. He does not even hold his own masters to any sort of high regard, and wouldn't mind slayling them either -- if it didn't put him at a disadvantage (he needs a master to reach his full potential in combat).
It is mentioned in Volume 3 that Vice's favorite food is hamburger steak, which he often forces K to make for him.