Vicente was an assassin hired by a mysterious woman to kill Gregory and Herbert. This led him to clash with the Newlydeads for their 10th Trial. They defeated him, however, and his mission ended in failure.
Due to this failure, Vicente felt sure that his employer would not allow him to live. He contemplated suicide, feeling that would be an easier route, but the Newlydeads talked him out of it for their 12th Trial.
Soon after, Vicente apparently died as he wound up in the Land of the Dead.