S01E18: The Enemy of My Enemy
Argit asks Ben and Gwen for protection from Kevin, so they take him to the nearest Plumbers Academy, but that won't stop Kevin.
Previous Episode 
Season 1
Fame
S1E1 / 23 Apr 2010
Duped
S1E2 / 30 Apr 2010
Hit 'Em Where They Live
S1E3 / 07 May 2010
Video Games
S1E4 / 14 May 2010
Escape from Aggregor
S1E5 / 21 May 2010
Too Hot to Handle
S1E6 / 28 May 2010
Andreas' Fault
S1E7 / 04 Jun 2010
Fused
S1E8 / 11 Jun 2010
Hero Time
S1E9 / 18 Jun 2010
Ultimate Aggregor
S1E10 / 10 Oct 2010
Map of Infinity
S1E11 / 10 Oct 2010
Reflected Glory
S1E12 / 15 Oct 2010
Deep
S1E13 / 22 Oct 2010
Where the Magic Happens
S1E14 / 29 Oct 2010
Perplexhahedron
S1E15 / 05 Nov 2010
The Forge of Creation
S1E16 / 12 Nov 2010
Nor Iron Bars a Cage
S1E17 / 19 Nov 2010
The Enemy of My Enemy
S1E18 / 03 Dec 2010
Absolute Power (1)
S1E19 / 10 Dec 2010
Absolute Power (2)
S1E20 / 10 Dec 2010
Season 2
The Transmogrification of Eunice
S2E1 / 04 Feb 2011
Eye of the Beholder
S2E2 / 11 Feb 2011
Viktor: The Spoils
S2E3 / 18 Feb 2011
The Big Story
S2E4 / 04 Mar 2011
Girl Trouble
S2E5 / 11 Mar 2011
Revenge of the Swarm
S2E6 / 18 Mar 2011
The Creature from Beyond
S2E7 / 25 Mar 2011
Basic Training
S2E8 / 01 Apr 2011
It's Not Easy Being Gwen
S2E9 / 08 Apr 2011
Ben 10,000 Returns
S2E10 / 15 Apr 2011
Moon Struck
S2E11 / 22 Apr 2011
Prisoner #775 Is Missing
S2E12 / 29 Apr 2011
The Purge
S2E13 / 16 Sep 2011
Simian Says
S2E14 / 23 Sep 2011
Greetings from Techadon
S2E15 / 30 Sep 2011
The Flame Keeper's Circle
S2E16 / 07 Oct 2011
Double or Nothing
S2E17 / 14 Oct 2011
The Perfect Girlfriend
S2E18 / 21 Oct 2011
The Ultimate Sacrifice
S2E19 / 28 Oct 2011
The Widening Gyre
S2E20 / 04 Nov 2011
The Mother of All Vreedles
S2E21 / 18 Nov 2011
A Knight to Remember
S2E22 / 02 Dec 2011
Solitary Alignment
S2E23 / 09 Dec 2011
Inspector #13
S2E24 / 04 Feb 2012
The Enemy of My Frenemy
S2E25 / 11 Feb 2012
Couples Retreat
S2E26 / 18 Feb 2012
Catch a Falling Star
S2E27 / 25 Feb 2012
The Eggman Cometh
S2E28 / 03 Mar 2012
Night of the Living Nightmare
S2E29 / 10 Mar 2012
The Beginning of the End
S2E30 / 17 Mar 2012
The Ultimate Enemy (1)
S2E31 / 24 Mar 2012
The Ultimate Enemy (2)
S2E32 / 31 Mar 2012
Yuri Lowenthal
Ben Tennyson (voice)
Ashley Johnson
Gwen Tennyson (voice)
Greg Cipes
Kevin Levin (voice)
