Ben 10 Season 2 Episode 25 - Ben Again and Again Episode Title:Ben Again and AgainEpisode Description:After Billy Billions' efforts to carve his face onto Mount Rushmore are thwarted by Ben, the two engage in a battle for the Omnitrix, going back to the time when Ben first gained it, but their meddling through the space-time continuum is causing history to destabilize. With the Omnitrix constantly changing users, can they save time itself?