Goodbye and Good Riddance

Goodbye and Good Riddance is the fifty-second and final episode of Ben 10. It is a "what if" episode.

Plot
Ben returns home after summer vacation ends and Max tells him that he must keep the Omnitrix a secret.

This is made all the more difficult by Ben's classmates who admire Ben's alien heroes while completely oblivious to Ben being them. Initially disappointed, Ben gets the chance to use the Omnitrix when Vilgax attacks, looking to take the Omnitrix from Ben. All four Tennysons (Ben's father helps) fight off Vilgax's Drones running amok in the city. When Vilgax appears again, easily fending off Ben, Ben's father suggests leading him into the underground gas line, which they ignite to incinerate the villain. Ben's secret is revealed to the public and Gwen ends up transferring to his school. Just when it seems like everything is quiet, Dr. Animo shows up with a mob of mutated animals, which Ben and Gwen get ready to fight.

Major Events

 * Carl Tennyson, Sandra Tennyson, and Ben's Dog make their debuts.

Character Debuts

 * Carl Tennyson
 * Sandra Tennyson
 * Ben's Dog

Characters

 * Ben Tennyson
 * Gwen Tennyson
 * Max Tennyson
 * Carl Tennyson
 * Sandra Tennyson
 * Cash Murray
 * J.T.
 * Jamie
 * Arnold (first appearance)
 * Peterson (first appearance)
 * Edward White
 * Ben's Dog

Villains

 * Vilgax
 * Drones
 * Dr. Animo
 * Bird villains

Aliens Used

 * Wildvine (off-screen transformation)
 * XLR8 (x2)
 * Diamondhead
 * Cannonbolt

Spells Used

 * Badickinis Metalalurca

Trivia
De regreso a casa
 * Many of Ben's alien exploits are mentioned by Ben's classmates, such as Heatblast's burning building rescue (Washington B.C.), Four Arms' fight with Kevin on top the Golden Gate bridge (Framed), Wildmutt's battle with Hex in Las Vegas (Tough Luck), Wildvine's battle with Sublimino (Midnight Madness), and Diamondhead at the Little League World Series (The Unnaturals).
 * The music played when Diamondhead is fighting the Drones is the same music in Ben 10: Protector of Earth.
 * The bird villains resemble Ravemon from Digimon Data Squad.
 * The Bird villains also are similar to the main characters in Gatchman.