Season 1
S1.E1 ∙ And Then There Were 10S1.E2 ∙ Washington B.C.S1.E3 ∙ The KrakkenS1.E4 ∙ Permanent RetirementS1.E5 ∙ HuntedS1.E6 ∙ Tourist TrapS1.E7 ∙ Kevin 11S1.E8 ∙ The AllianceS1.E9 ∙ Last LaughS1.E10 ∙ Lucky GirlS1.E11 ∙ A Small ProblemS1.E12 ∙ Side EffectsS1.E13 ∙ Secrets
Season 2
S2.E1 ∙ TruthS2.E2 ∙ The Big TickS2.E3 ∙ FramedS2.E4 ∙ Gwen 10S2.E5 ∙ Grudge MatchS2.E6 ∙ The Galactic EnforcersS2.E7 ∙ Camp FearS2.E8 ∙ Ultimate WeaponS2.E9 ∙ Tough LuckS2.E10 ∙ They Lurk BelowS2.E11 ∙ Ghostfreaked OutS2.E12 ∙ Dr. Animo and the Mutant RayS2.E13 ∙ Back with a Vengeance
Season 3
S3.E1 ∙ Ben 10,000S3.E2 ∙ Midnight MadnessS3.E3 ∙ A Change of FaceS3.E4 ∙ Merry ChristmasS3.E5 ∙ BenwolfS3.E6 ∙ Game OverS3.E7 ∙ Super Alien Hero Buddy AdventuresS3.E8 ∙ Under WrapsS3.E9 ∙ The UnnaturalsS3.E10 ∙ Monster WeatherS3.E11 ∙ The ReturnS3.E12 ∙ Be Afraid of the DarkS3.E13 ∙ The Visitor
Season 4
S4.E1 ∙ Perfect DayS4.E2 ∙ Divided We StandS4.E3 ∙ Don't Drink the WaterS4.E4 ∙ Big Fat Alien WeddingS4.E5 ∙ Ben 4 Good BuddyS4.E6 ∙ Ready to RumbleS4.E7 ∙ Ken 10S4.E8 ∙ Ben 10 vs. The Negative 10: Part 1S4.E9 ∙ Ben 10 vs. The Negative 10: Part 2S4.E10 ∙ Goodbye and Good RiddanceS4.E11 ∙ Ben 10: Secret of the Omnitrix, Part 1S4.E12 ∙ Ben 10: Secret of the Omnitrix, Part 2S4.E13 ∙ Ben 10: Secret of the Omnitrix, Part 3
Ben 10 (2005)
The story of Ben Tennyson, a typical kid who becomes very atypical after he discovers the Omnitrix, a mysterious alien device with the power to transform the wearer into ten different alien species.