Ben Again

Ben Again is the eighteenth episode of Ben 10: Omniverse.

Plot
When Eon forces young Ben and teenage Ben to switch minds, only Professor Paradox can sort things out and help Ben stop Eon from taking over the timelines.

Major Events

 * Ditto makes his Omniverse debut.
 * Professor Paradox, Eon and the third Ben 10,000 make their Omniverse debuts.

Characters

 * Ben Tennyson (11 and 16 years old)
 * Rook Blonko
 * Gwen Tennyson (11 and 16  years old)
 * Max Tennyson (61 and 66 years old)
 * Blukic
 * Driba
 * Pakmar
 * Professor Paradox (first re-appearance)
 * Ben 10,000 (Omniverse) (first appearance)

Villains

 * Eon (first re-appearance)
 * Eon's Servants (first re-appearance)

By 16 year old Ben

 * Diamondhead

By 11 year old Ben

 * XLR8

By 16 year old Ben (in 11 year old's body)

 * Ditto (first re-appearance)
 * Wildvine
 * Clockwork (first appearance)

By 11 year old Ben (in 16 year old's body)

 * Diamondhead
 * Armodrillo
 * Goop (cameo)
 * NRG (cameo)
 * Wildmutt (cameo)
 * Big Chill (accidental transformation; selected alien was Armodrillo)
 * Articguana
 * Clockwork

Errors

 * In the scene where all of the Ditto clones are gathered, one of the clones is missing a bump on his wrist, while another is missing one on his shoulder.
 * When 16 year old Ben (in 11 year old bens body) is Clockwork, the sides of the Omnitrix symbol is gold instead of silver.

Trivia

 * This episode replaced the episode Tummy Trouble due to a change in the schedule.
 * Doctor Who is further homaged by Paradox mentioning being a part in a time war, this is explained by the Doctor as the reason the Time Lords aren't around any more in Doctor Who. This is further expanded upon in David Tennant's last episode "The End of Time".