Showdown, Part II

Showdown, Part II is the fifteenth episode of ''Ben 10: Power of 10. ''It is the second part of the two-part first season finale.

Aliens Used

 * Wildmutt
 * Grey Matter
 * Upgrade
 * Stinkfly
 * Heatblast
 * Fourarms
 * XLR8
 * Ghostfreak
 * Diamondhead
 * Ripjaws