Karl

Ben needs to pretend that he is not scared when staying in a haunted hotel!

Characters

 * Ben Tennyson
 * Gwen Tennyson
 * Max Tennyson
 * Carl  (first appearance)

Villains

 * Karl  (first appearance)

Aliens Used

 * Cannonbolt
 * Upgrade  (selected alien was Cannonbolt)
 * Wildvine

Allusions

 * Ben saying "zoinks" is a reference to Shaggy from the Scooby-Doo franchise.
 * The line where Carl says "And I would have too, if it wasn't for that kid turning into aliens" is a homage to the popular Scooby-Doo quote "And I would have gotten away with it too, if it weren't for you meddling kids".