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Vendetta is the forty-fourth episode of Ben 10: Alien Force.


In the Null Void, a criminal named Ragnarok escapes from a prison. He destroys the guards and exits the building, evading shots from guards. He exits the Null Void through a nearby Vortex, avoiding the Null Guardians.

The team is fighting the Forever Knights. Rath scares them away, and Gwen and Kevin surround them. Rath ties them up and transforms back into Ben. The team couldn't go to Mr. Smoothy because Kevin has to get home. Meanwhile, Kevin returns home to find his house ransacked. His mom then confesses to him the truth about Ragnarok. Kevin then asks Ben and Gwen if they know anything about Ragnarok, and when they tell him that they have no knowledge, he tells them to stay out of the situation.

Max and Devin as Plumber partners

The two, now concerned, decide to investigate anyway. Ben and Gwen meet with Grandpa Max and ask him if he knows anything about the escape, as well as an alien named Ragnarok. He confesses of having a partner named Devin, who gave his life to stop Ragnarok several years back. His partner's full name was Devin Levin, Kevin's dad, and Kevin wants revenge on Ragnarok for killing his father. Ben and Gwen go after Kevin by tracking him with his Plumber Badge.

Meanwhile, Ragnarok is searching for the key he needs before Kevin confronts him, but Ragnarok beats him up in a fight and demands his key. Ben and Gwen arrive and Ben transforms into Lodestar and battles Ragnarok, but Kevin pushes him out of the way and attacks Ragnarok himself with Gwen and Lodestar helping. Ragnarok teleports away and Lodestar transforms back into Ben. Kevin blames Ben and Gwen for letting Ragnarok get away and storms off. Gwen uses her mana to scan Kevin's subconscious and find the key. They go to Kevin's house, where the key is disguised as a picture frame. Ragnarok teleports in and attacks the team. He takes the frame and turns it into his key. Kevin attacks Ragnarok, as does Gwen. Ben transforms into Diamondhead. Ragnarok attacks him, but Diamondhead redirects his blast and shoots diamonds at him. Ragnarok defeats the team, inserts the key into his head, and calls his ship into Earth's orbit. He then teleports away, but Gwen is able to jump onto his teleport signal and they follow.

Gwen, Ben and Kevin following Ragnarok

They emerge on Ragnarok's ship and split up to search, Kevin going a different way than Ben and Gwen. Gwen worries about what Kevin will do if he finds Ragnarok first. Just then, Kevin tricks Ben and Gwen into an escape pod and launches them to Earth. Ragnarok prepares to use his ship to drain the sun, which was what he was trying to do when he was captured. He powers up the ship, but Kevin arrives on the bridge and distracts him. He starts to suck the sun's energy out and attacks Kevin. Kevin starts smashing the controls. Ragnarok tosses him away, but the ship starts to malfunction and send the energy back.

Explosions rock the bridge and the window shatters, exposing them to space. Ragnarok is sucked out and begs Kevin to save him. Kevin takes the key and Ragnarok flies into space. The ship explodes as Ben and Gwen watch. Gwen starts to cry, thinking that Kevin is dead. Ben tries to calm her down by telling her that Kevin was a hero to the very end.

Kevin then shows up, making a joke about them caring about him. Ben is surprised that he survived and Gwen runs up to Kevin, hugging him and telling him that she was worried. Ben and Gwen ask what happened; he simply states that Ragnarok didn't make it.

Noteworthy Events

Major Events

Character Debuts

Minor Events

  • This is the first time Ben calls Kevin by his surname, Levin.
  • Lodestar's species is revealed in this episode: Biosovortian.
  • It is shown that Gwen can manipulate one's memories/subconscious in order to obtain information.



Aliens Used



Devin: Max! He's getting closer!
Max: Ship won't go any faster, Devin!
Devin: Have you tried flapping your arms?

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Ragnarok: Enough games. Where is my key?
Devin: Have you tried checking under the couch?

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Max: Ben, Gwen! Well, this is a pleasant surprise. You kids interested in one of my famous wombat omelets?
Gwen: Maybe later.

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Ben: Hey! Who died and made you boss?
Kevin: If you got a problem with it, you!

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Gwen: He's going through a lot, Ben. He idolizes his father and...(whispers) We have to find Ragnarok before Kevin does. I'm afraid of what he might do.
Ben: Kevin? Come on. He talks all tough, but he would never-
Kevin: Guys. Quick, come here! (Ben and Gwen run towards him) This way, I found him! (Points to what appears to be a small room)
Ben: We have to be ready for any- (Realizes Ragnarok isn't there) Hey! What is this? (Kevin seals Ben and Gwen in the room)
Gwen: It's an escape pod!
Ben: This isn't funny, Levin. Let us out!!
Kevin: Just remember, Tennyson, I asked you to stay out of this! (launches the escape pod)
Gwen: Oh, Kevin, what have you done?
Ben: There's got to be a way for us to get back there.
Gwen: It's on auto pilot to Earth. No controls. No space suits. Kevin is on his own.
Ben: (angry) Just like he planned it.

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Ragnarok: You again? I should have eliminated you when I had the chance!
Kevin: Your mistake.

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Naming and Translations

Language Name Origin
French Vendetta Vendetta
Hungarian Vérbosszú Vendetta
Polish Zemsta Revenge
Portuguese (Br) Vingança Revenge
Romanian Vendetta Vendetta
Spanish (HA) Venganza Revenge
Spanish (Spain) Venganza Revenge



Voice Actor Role(s)
Yuri Lowenthal Ben Tennyson
Ashley Johnson Gwen Tennyson
Greg Cipes Kevin Levin
Dee Bradley Baker Diamondhead
Knight Leader
Paul Eiding Max Tennyson
John DiMaggio Rath
Pamela Adlon Mrs. Levin
Ioan Gruffudd Devin Levin
Robot Guard


  • This episode reveals a lot about Kevin's past including his father and his father's killer. However, in The Rooters of All Evil, it and the photo of Kevin and Devin[DJW 1] were revealed to be false memories and images created by Servantis.
  • In this episode, it is shown that Diamondhead can absorb and redirect energy beams like Chromastone.
    • According to Derrick J. Wyatt, Diamondhead's energy absorption was born from a glitch in the Omnitrix. The out-of-universe reason Diamondhead has this ability is because a storyboard artist was not familiar with his powers.[DJW 2] However, it is unknown if this is canon as Matt Wayne seemed to be unaware of the existence of glitch powers.[MW 1]


Dwayne McDuffie

Derrick J. Wyatt

Matt Wayne

Ben 10: Alien Force Episodes
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