Reuben was interviewd and mentioned in a article.  Check it out here:

Take Reuben Langdon who did the voice and motion-capture modeling for the character of Dante in the Capcom’s “Devil May Cry 3” and the upcoming “Devil May Cry 4”.Prior to his videogame work, Langdon, 32, had done several TV shows in Japan, but never would have been recognized on American streets. But now the fan mail floods in and he signs autographs at conventions. “Before the game came out, nobody knew who I was,” Langdon said. “I get way more attention than I ever got as a (screen) actor.”