Showdown, Part I

Showdown, Part I is the fourteenth episode of Ben 10: Power of 10. It is the first part of the two-part first season finale.

Aliens Used

 * Heatblast (2x)
 * Diamondhead (3x)
 * XLR8 (2x)
 * Fourarms
 * Ghostfreak (2x)
 * Ripjaws
 * Grey Matter
 * Upgrade
 * Wildmutt
 * Stinkfly

Trivia

 * This is the first episode where every alien is used.
 * This is the first episode where Ben used more than 3 aliens per episode.