Ben 10: Alien Force

1. S01E01Ben 10 Returns (1)April 18, 2008—Ben discovers that the Forever Knights are trading weapons with the DNAliens, while at the same time, Grandpa Max has mysteriously gone miss
2. S01E02Ben 10 Returns (2)April 18, 2008—Ben, Gwen, and Kevin follow a lead that takes them to a secret base in the desert. There they hope to find Grandpa Max but instead find a Hi
3. S01E03Everybody Talks About the WeatherApril 25, 2008—A signal from Kevin's Plumber badge leads Ben's team to a cornfield where local police pursue a Pyronite-human hybrid they blame for crop ci
4. S01E04Kevin's Big ScoreMay 3, 2008—While making repairs to the Rustbucket, Kevin steals it. He plans to use it as collateral for some other technology, but it gets stolen from
5. S01E05All that GlittersMay 10, 2008—Grandpa Max leaves Ben a series of instructions to contact a team of heroes. Things go the wrong direction when they soon find them.
6. S01E06Max OutMay 17, 2008—Ken, Gwen's brother, stops in a small town for engine repairs and disappears. Grandpa Max arrives first to find him, Ben and the others soon
7. S01E07Pier PressureMay 31, 2008—Ben goes out on a date. All does not go as well as he'd like when objects start attacking him and he's forced to go hero to protect himself,
8. S01E08What Are Little Girls Made Of?June 7, 2008—When Ben and Gwen learn that their grandmother Verdona is an alien being, Verdona insists that Gwen should come along with her to her home p
9. S01E09The GauntletJune 14, 2008—When Ben stands up to Cash and JT, they soon discover a robotic gauntlet from Kevin's vehicle. With it, Cash decides to get back on Ben, alt
10. S01E10ParadoxJuly 5, 2008—A time experiment in the 1950s sends a bizarre monster to Ben's time. Now Ben, Gwen, and Kevin must team up with Paradox, a time traveling h
11. S01E11Be-KnightedJuly 12, 2008—A dragon escapes from the Forever Knights, and they ask Ben for help tracking down/killing the beast. The team learns why the Knights were f
12. S01E12Plumbers' HelpersJuly 19, 2008—Two Plumber offspring are taking down all aliens. Now they have their sites set on Ben's team, forcing the team to fight two of Ben's old al
13. S01E13X Equals Ben Plus 2 (X = Ben + 2)August 31, 2008—When an alien emperor deems to destroy Earth due to the disappearance of his daughter, Ben must use Alien X to restore order, but not everyt

Season 1 ranked & reviewed

1. S02E01Darkstar RisingOctober 10, 2008—The team is confronted by a Plumber Magister who accuses them of impersonating Plumbers. Meanwhile, a new foe allies himself with a HighBree
2. S02E02Alone TogetherOctober 17, 2008—During battle, Ben and a HighBreed commander are teleported to a distant world. They must put their differences aside if they're going to ha
3. S02E03Good Copy, Bad CopyOctober 24, 2008—Following up on reports of Ben having nightly activities, Kevin and Gwen discover what might be described as Ben's evil twin.
4. S02E04Save the Last DanceNovember 7, 2008—When Gwen demands that Kevin take her to her school's summer dance, Ben offers Kevin good advice. Meanwhile, Ben and Julie contend with a ma
5. S02E05UndercoverNovember 14, 2008—When the team turns to Cooper to get Kevin's transporter device working properly, they find their young friend has been abducted. Finding hi
6. S02E06Pet ProjectNovember 21, 2008—The Forever Knights develop a ship they will use to travel to the dragon's home world to destroy all dragons. To make it fully functional, t
7. S02E07GroundedNovember 23, 2008—When Ben's parents discover his ability to turn into aliens, they forbid him from using the Omnitrix and later ground him from using it agai
8. S02E08VoidedDecember 5, 2008—After Gwen receives an S.O.S. from Helen, Ben must go into the Null Void to save her and Manny. Once there, he must find The Wrench in order
9. S02E09Inside ManDecember 12, 2008—Tyler, a man fighting against DNAlien programming, struggles to regain lost memories and convince local authorities of a hostile alien prese
10. S02E10Birds of a FeatherMarch 24, 2009—Ben decides to help an arachnachimp on his lunar quest for a crystal.
11. S02E11UnearthedMarch 25, 2009—The team hears of a creature on nightly rampages in the desert and investigates. They find the creature, and some DNAliens.
12. S02E12War of the Worlds (1)March 27, 2009—Paradox and Azmuth arrive with grave news: The DNAliens are ready to make their move. While Gwen and Kevin gather help, Azmuth reveals some
13. S02E13War of the Worlds (2)March 27, 2009—Though Ben's team fails to stop the DNAlien Fleet from arriving, re-enforcements arrive, but this battle can't be won on Earth. A small grou

Season 2 ranked & reviewed

1. S03E01The Vengeance of Vilgax (1)September 11, 2009—Vilgax has beaten the heroes of ten planets and taken their powers as his own. Now he's looking for Ben.
2. S03E02The Vengeance of Vilgax (2)September 11, 2009—Ben, Gwen and Kevin race to collect the Omnitrix's missing forms and make it to the battle with Vilgax on time. Meanwhile, Kevin discovers t
3. S03E03InfernoSeptember 18, 2009—Grandpa Max asks the team to investigate some strange desert activity, leading them to encounter Vulkanus and his incendiary plans for Earth
4. S03E04Fool's GoldSeptember 25, 2009—Alien Spring Break at a town's Popcorn Festival occurs every 17 years. When one alien goes missing, Max sends the team to find the wayward a
5. S03E05SimpleOctober 9, 2009—An alien girl asks for Ben's help to end a war that's lasted for years.
6. S03E06Don't Fear the RepoOctober 16, 2009—Ship's owner decides he wants him back and hires some repo men to retrieve him. Ben and Kevin go to court to take care of things legally, le
7. S03E07Single HandedOctober 23, 2009—A retriever who specializes in obtaining rare goods comes after the Omnitrix, dimensionally separating the Omnitrix and a part of Ben. Ben i
8. S03E08If All Else FailsNovember 6, 2009—A series of earthquakes awakens a HighBreed officer who has been hibernating deep under the earth's surface. He believes the HighBreed have
9. S03E09In Charm's WayNovember 13, 2009—Kevin is beginning to lose all hope that he will someday return to his human self. He then meets a girl who doesn't seem to mind the form he
10. S03E10Ghost TownNovember 20, 2009—Vilgax promises Ghostfreak to spring him out of prison as long as he tells him the secrets of the Omnitrix, but when Ghostfreak betrays him
11. S03E11Trade-Off!December 4, 2009—Kevin tracks down Darkstar. Darkstar asks for Kevin's help to retrieve an item that could cure both of them.
12. S03E12Busy BoxDecember 11, 2009—The team investigates some highly advanced alien technology. They find a box that is more advanced than the Omnitrix. Others desire this tec
13. S03E13Con of RathJanuary 8, 2010—An alien race asks the team to deliver the Tiffin to another race as a peace offering. The Omnitrix changes Ben into a new form that's highl
14. S03E14PrimusJanuary 15, 2010—An undisclosed connection between the Omnitrix and the planet Primus teleports Ben and team to the hidden planet when it comes under threat.
15. S03E15Time HealsJanuary 22, 2010—Despite being warned by Paradox, Gwen travels back in time to prevent the accident that turned Kevin into a monster from ever happening. Gwe
16. S03E16The Secret of ChromastoneJanuary 29, 2010—A celestial alignment and the true function of a power shard leads Tetrax to throttle ChromaStone right out of Ben Tennyson for a time-sensi
17. S03E17Above and BeyondMarch 12, 2010—The Plumbers' Helpers receive a distress call from Max, followed by a threatening message from Ben to not interfere. Something's wrong, and
18. S03E18VendettaMarch 19, 2010—Ragnarok, the villain who killed Kevin's father, is out to complete the mission he started years ago. Kevin is determined to stop him and ge
19. S03E19The Final Battle (1)March 26, 2010—Albedo has stolen the Ultimatrix from Azmuth and has used it to kidnap Gwen and Kevin. Ben goes to face Albedo and rescue his friends when h
20. S03E20The Final Battle (2)March 26, 2010—Powerless, Ben goes aboard Vilgax's ship and faces off with Vilgax to stop his invasion of Earth in their final battle. Albedo gives Ben the

Season 3 ranked & reviewed