Beyond The Past

Beyond The Past is the third episode of Ben 10/Generator Rex: Omniverse.

Heroes

 * Ben Tennyson
 * Rex Salazar
 * Rook Blonko

By 17 year old Ben

 * The Worst (x2) (first re-appearance, first time accidental transformation; selected alien was unknown)
 * NRG (accidental transformation; selected alien was Gravattack)
 * Stinkfly
 * XLR8 (first re-appearance, accidental transformation; selected alien was unknown)
 * Brainstorm (first re-appearance)

By 12 year old Ben

 * Four Arms (first re-appearance)
 * Ripjaws (first re-appearance)