Malefactor
Ben 10: Omniverse - S2 - E5
Ben and Rook are attacked by Khyber at a festival.
Ben 10: Omniverse: Season 2 - 10 Episode s
2x1 - Outbreak
November 24, 2012
The Omnitrix begins to malfunction and goes haywire when Psychobos steals a piece of an Omnitrix core causing Rook to mutate into a half-Gourmand and a half-Revonnahgander after Ben 10 attempts to complete a transformation.
2x2 - Many Happy Returns
December 1, 2012
Gwen and Kevin visit Bellwood. Kevin tells Ben that he must hide himself from The Tetramand Princess Looma as she is hunting him as Looma wishes to marry Kevin.
2x3 - Gone Fishin'
December 8, 2012
Magister Patelliday is kidnapped by pirates who rob ships and put them in giant glass bottles to sell them. They intend to devour Patelliday. Any attempts at rescue are hard, since they have a Krakken and a robot army.
2x4 - Blukic and Driba go to Mr. Smoothy's
December 15, 2012
Ben and Rook must stop Trumbipulor from gaining absolute power while Blukic and Driba set out to find Mr. Smoothy's.
2x5 - Malefactor
December 22, 2012
Ben and Rook are attacked by Khyber at a festival.
2x6 - Arrested Development
January 5, 2013
Billy Billions turns Ben and Rook into kids again.
2x7 - Bros in Space
January 12, 2013
Ben and Rook visit Rook's family while Revohnnah is attacked by an old foe.
2x8 - Ben Again
January 19, 2013
When Eon forces young Ben and teenage Ben to switch minds, only the time-traveling Professor Paradox can sort things out and help Ben stop Eon from taking over the timelines.
2x9 - Store 23
January 26, 2013
Ben meets an alternate version of himself while searching for a 23rd Mr. Smoothy's store.
2x10 - Special Delivery
February 2, 2013
As payment for destroying his car, Mr. Baumann orders Ben to make deliveries for him without using the Omnitrix.