The BEST Episodes of Ben 10: Alien Force
Every episode ever - ranked by fan votes!
Last Updated: Feb 3, 2021
Network: Cartoon Network
Ben 10: Alien Force is the sequel to the hit Cartoon Network series, Ben 10. The series takes place five years later after the original. Ben no longer wears the Omnitrix, and his cousin, Gwen, has honed her skills in magic. But when an alien invasion of the DNALIENS strike Earth and Grandpa Max goes missing, Ben decides that it's hero time once again. He's not alone, as he is joined by Gwen, and even his old archenemy, Kevin Levin comes along for the ride. Now it's time once again for Ben to begin his quest to find his grandfather and stop the invasion from the evil DNALIENS.
#1 - Time Heals
Season 3 - Episode 15 - Aired Jan 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. Gwen returns to the present only to find that her time traveling caused a series of events that led to Hex ruling the world.
#2 - The Final Battle (1)
Season 3 - Episode 19 - Aired Mar 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 he quickly discovers that Albedo has been working in conjunction with Vilgax. Ben is defeated by the pair and gives up the Omnitrix to save himself and his friends.
#3 - Above and Beyond
Season 3 - Episode 17 - Aired Mar 12, 2010
The Plumber's Helpers are called upon by Grandpa Max to rescue him from an abandoned space station where he's being attacked by Ben! The team must now find a way to work together as they try to save Max, stop Ben, and keep the space station from crashing to Earth.
#4 - The Final Battle (2)
Season 3 - Episode 20 - Aired Mar 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 Ultimatrix and Ben gets his old aliens and their evolved forms.
#5 - Trade Off
Season 3 - Episode 11 - Aired Dec 4, 2009
Kevin makes a temporary truce with Darkstar to retrieve an artifact that will return them into their former selves.
#6 - Con of Rath
Season 3 - Episode 13 - Aired Jan 8, 2010
Zaw-Veenull asks Ben to deliver Prince Tiffin to Jarret in order to keep peace between the two species. Shortly, after their trip in space, the Omnitrix malfunctions and turns Ben into an Appoplexian named Rath who wants to fight anything that breathes.
#7 - Primus
Season 3 - Episode 14 - Aired Jan 15, 2010
The Omnitrix transports Ben, Gwen, and Kevin to a planet called Primus, which turns out to have been created by Azmuth. They must stop Vilgax from stopping the Omnitrix at its source.
#8 - Vendetta
Season 3 - Episode 18 - Aired Mar 19, 2010
Kevin returns home to find his house ransacked, so he enlists Ben and Gwen's help to find out who did it and why. They soon cross paths with Ragnarok, a deadly criminal who recently broke free from the Null Void and is in search of a special key. Kevin is intent on stopping Ragnarok from obtaining the special key, especially after he learns the truth about Ragnarok and his father.
#9 - Save the Last Dance
Season 2 - Episode 4 - Aired Nov 7, 2008
Kevin asks Gwen to the school dance; Ben fears he's losing control of the Omnitrix.
#10 - Ghost Town
Season 3 - Episode 10 - Aired Nov 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 and turns his people into his minions, Vilgax comes to Earth and asks for Ben, Gwen and Kevin's help to get rid of Ghostfreak.
#11 - In Charm's Way
Season 3 - Episode 9 - Aired Nov 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 is in. Kevin finds himself under her spell, quite literally, as Charmcaster has come back to exact revenge on Ben and Gwen. Kevin, under Charmcaster's spell, has no choice but to obey his master and destroy Ben and Gwen.
#12 - Simple
Season 3 - Episode 5 - Aired Oct 9, 2009
An alien named Probity seeks help from Ben to stop the on-going war on her home planet.
#13 - The Gauntlet
Season 1 - Episode 9 - Aired Jun 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, although this time, it's more than just a joke.
#14 - The Secret of Chromastone
Season 3 - Episode 16 - Aired Jan 29, 2010
While sick, Ben is visited by old friend Tetrax, who demands that Ben hand over Chromastone.
#15 - X = Ben + 2
Season 1 - Episode 13 - Aired Aug 31, 2008
An alien emperor plans to destroy the planet Earth for kidnapping his daughter. In order to save the planet, Ben must uncover the secrets of Alien X.
#17 - War of the Worlds (2)
Season 2 - Episode 13 - Aired Mar 27, 2009
Ben goes to the HighBreeds' world in an attempt to stop their attack on Earth.
#18 - Kevin's Big Score
Season 1 - Episode 4 - Aired May 3, 2008
Kevin shatters Ben and Gwen's trust when he steals the Rust Bucket to sell for alien technology on the black market.
#19 - Birds of a Feather
Season 2 - Episode 10 - Aired Mar 24, 2009
The gang helps the prince of the arachna-chimps regain power
#20 - Inferno
Season 3 - Episode 3 - Aired Sep 18, 2009
Ben, Gwen and Kevin discover that Vulkanus is planning to drill the center of the Earth and drop a bomb into the hole. Destroying the planet.
#21 - War of the Worlds (1)
Season 2 - Episode 12 - Aired Mar 27, 2009
Ben, Gwen and Kevin gather their allies to counter the threat of the incoming Highbreed fleet. Azmuth reveals a secret about the Omnitrix.
#22 - Busy Box
Season 3 - Episode 12 - Aired Dec 11, 2009
Ben, Kevin and Gwen come across an alien box that can forms into a robotic version of whatever it sees. It power becomes a liability when the Vreedle brothers decide to take the box for themselves.
#23 - Plumbers' Helpers
Season 1 - Episode 12 - Aired Jul 19, 2008
Freelance young Plumbers mistake Ben and his team as a threat.
#24 - Undercover
Season 2 - Episode 5 - Aired Nov 14, 2008
Cooper is kidnapped by the DNAliens, who want him to build a mystery arch.
#25 - If All Else Fails
Season 3 - Episode 8 - Aired Nov 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 lost the war and activates a fail safe device that is programmed to destroy. Ben must now work together with Gwen and Kevin not only to save Grandpa Max, but also the world from this "giant" problem.